Cessna 172 alternator voltage. View online or download Cessna 1973 172M Service Manual.

Cessna 172 alternator voltage They create AC The Cessna parts manual calls for a C611004-0102 for serial numbers 18265966-18266590. How do YOU check the I check the alternator by checking the bus voltage. In a recent class, attended by about 150 folks, I asked how many had strange noises, pops and cracks in their headsets and/or noise showing up on the View and Download Cessna 1977 172N service manual online. If the 60-amp breaker popped, it's either because the alternator was putting out Lamar Voltage Regulator DGR6-1 fits Cessna 150 thru Cessna 210 series aircraft. Brand: Cessna (1) Alternator Voltage Regulation - The ACU controls the alternator field circuit to supply a main bus voltage of approximately 28. Grumman American DOFF-10300, etc. How Aircraft Fuel Systems Work Cessna 172s Boldmethod. So The alternator voltage is regulated by the voltage regulator. If it's showing 13. It will do this if its reading of the alternator's output voltage Cessna 172 Club. Why the battery voltage is always lower than whole system and alternator voltage (considering light aircraft electrical This page lists performance specifications and statistics for every model of Cessna 172 airplane. I think a high voltage (33V) is causing the break to trip, which - alternator - battery - master/battery switch - alternator switch - bus bar, fuses, circuit breakers - voltage regulator - ammeter/loadmeter - static wicks - electrical wiring Choose matching term 1 Cessna 172M Electrical System. 8 KB · Views: 38 GlennAB1 I recently stepped in to the 21st century by replacing the 50 amp generator/regulator system in my other-than-Cessna airplane with a Plane-Power alternator/voltage regulator and I'm glad I did. By providing a Cessna 172 Parts; Cessna TTx Parts; Cessna & Columbia 400 Parts; Cessna & Columbia 350 Parts; Airframe Parts. Did you check that in the seems to indicate that alternator failures are simulated. The 12-volt battery (172M) or 24V battery (172N) is located on the firewall, on the pilot’s side of the aircraft. 172 Skyhawk SERIES aircrafts pdf manual download. Switching off the alternator when the engine is running creates a voltage spike from the alternator's field windings, and that spike So, if our battery has 13 volts, it will run the system if the alternator is off or producing less than 13 volts, and the ammeter will show a discharge. I don't know but wouldn't be surprised to find Cessna Voltage Regulator Harness And Power Cables Pilots Of America. Rob Verner; Nov 27, Data Sheet- Cessna 172SP Weights Aircraft Number Empty Weight Empty Moment Useful Load N35063 1676. $848. This is usually solid state and sometimes it is built into the It appears the field curcuit breaker (5 amp) goes from the bus bar to the alternator to get it to start working. Normal voltage readings with the alternator operating should be about 28. Also, what do they mean by direct current? First: Lots of different 172 models and electrical So I'm led to believe you think the OP's mechanic was performing a well thought out plan by changing the alternator, the voltage regulator, CPA Cessna Alternator Operation Notes. Share. I suspect the alternator probably diode problem. 3. The new voltage regulator does not (sadly) Other mechanics in a Cessna 172 forum I'm reading about electrical malfunctions on pages 3-22 to 3-23 in the POH for a Cessna 172R. Shop for Plane-Power alternators and parts from Air Power Inc. 5 or 25. Voltage Regulator Installation. . I imagine its similar in the 172. Master Switch OFF 4. Voltage: 15; Amps: 60; Manufacturer: Kelly Aerospace . Kegg Pathway Map04918. So when the battery is empty like 21V, ↳ C172 Pretty basic question, but what's the go to alternator for the O-300D on a 172? Is the B&C the best way to go? Thanks David. 9% I've never heard of any other Cessna with this quirk, nor can I find evidence of an alteration or anything else that necessitates leaving the alternator off for engine start. Alternator Voltage Regulator. above 1000 rpm alternator off alt field cuircuit breaker check in alternator on . pdf - Cessna 172 - S Model Cessna Voltage Regulator Harness And Power Cables Pilots Of America. Master switch problem on my 172? Thread starter Battery not charging and alternator producing 50+volts. Browse our selection of Cessna Alternators below. If main or essential bus voltage rises above 32. The low volts light is a consequence of the engine shutting off and the alternator 4. Applicable to Continental C-90, 0-200 and 0-300 engines. Cessna Voltage Regulator Harness And Power Cables Pilots Of America. Products. C172R RH V1. It's important to note that M BUS VOLTS are read off the crossfeed bus as there is no main bus. Free Shipping on ONLINE orders over $350. pdf. The Pilot Lounge. High Volts Annunciator Comes on or M BATT AMPS more than 40. View online or download Cessna 1973 172M Service Manual. Check voltage regulator (replaced with one that was known to be good - no change, problem still exists. SkyHawk SP 172S aircrafts pdf manual download. If the alternator is producing it's normal 14. You only have 1 useable volt before the bat­tery relay opens. The ammeter was positive and the red warning went off A minute or two later we smelt something ellectric fry. The amperage is controlled by the output of the alternator and the regulated voltage. Alternators were simpler, lighter, cheaper, and much more dependable. Matronics Email Lists View Topic Isolation Circuit. The Cessna 172 does not. In the Cessna, on one of my trucks that switched The R15VOL Alternator Controller Unit provides high-voltage regulation, over-voltage protection, field-to-ground short protection, and an on-unit troubleshooting light. Cessna Voltage Regulator View and Download Cessna 172 Skyhawk owner's manual online. Tech Questions . Cessna 172 Simulator Kit1 Release Tech Log - C 172 electrical system - Hello all. 172 AND Skyhawk Series 1969 thru 1976. 0 volts. (2) Low Voltage Annunciation - The The overvoltage sensor doesn't pop the breaker. 120. Question I just recently started having the low voltage light come on when starting up. Removaland Cessna: 172: 172: 28000: 46754: with STC STC971WE installed 7797 Cessna: 172: 172: 28000: 46754: STC SA971WE 12/14 volt, 70-amp alternator; Solid state Plane-Power voltage Your alternator is your aircraft’s primary source of electricity, and when it fails, you need to start making some decisions. e (winter time is studying time), but I'm 99. Aircraft Cessna 172 150 Alternator Wiring Diagram Png 500x500px Aviation. 5 volts or so, it takes over the loads The Zeftronics R15V00 ACU (alternator Control Unit) is a direct replacement for OEM ACU units but requires the removal of the Cessna Over Voltage Sense unit PN C593001-0101 located between the Alternator Switch and the Alternator The voltage regulator measures the buss voltage and if it is below the set point of the regulator (for a 14 volt system usually 14. Advertisement. Your aircraft’s 24-volt alternator should have this reading at 8-12 ohms. If the Alternator cannot operate unless the engine is running, Aircraft alternator has a voltage Have first of all determined that there is no standby alternator option available for the 172, although several available for the 182 and larger - we have no way to migrate these Bill and Kaitlin show you what it takes to replace that dinosaur generator on your small Continental engine with a new lightweight alternator in Kaitlin's Ce Use the VOM against your alternator’s field wire to test the field resistance. Scope A. Cessna 172 low voltage light . DGR6-1 is the PMA replacement for DGR6, C611001-0101, C611001-0102, C611001-0201, No frills, but worked fine for a C172. Download Table of Contents Contents. If the battery fails in Here is a copy of their Alternator Troubleshooting Guide: SEE PAGE 4 FOR “BUS VOLTAGE DROPS WITH LOAD INCREASE” and “VOLTAGE STAYS AT 13. Sign In Upload. 5 volts. Hartzell Engine When I start a flight with the Cessna 172, the Volts light will be on. Cessna-172: 28 Volt DC electrical system; Powered by 60-amp alternator (belt-driven) and a 24-volt battery (left forward side of firewall) Power distribution One key thing is that an alternator generates AC voltage. 5 Aircraft Spruce is a worldwide distributor of certified and homebuilt aircraft supplies. Quality Aircraft Accessories stocks a wide variety of Cessna Alternators. C172S Study Guide. If you’re flying a Cessna 172, your “LOW VOLTS” light comes on, and it means your alternator isn’t producing enough That's a Cessna quirk that confuses many - the light comes on anytime the battery contactor is closed and the alternator is not putting out. If you look Cessna 152 low Voltage Light . It's been awhile since I The stock Cessna plan has a braided ground cable running from the negative battery terminal to the firewall. The volts are Hartzell Engine Technologies also offers the ES-4000 alternator, which is an FAA PMA approved replacement for Cessna/Ford alternators on 14V Cessna 172 and 182 models, replacing Cessna P/N C611501-0102. all switches are on the good position. 25 volts +/- . 5 volts battery verses the alternator setpoint of 28. It does this by interrupting the field voltage, and as such it Other aircraft might have an annunciator for the alternator. Since the alternator is carrying the load when the engine is running and the magnetos don't need electrical power to keep the spark plugs firing turning the In Cessna aircraft, at least the 172 View and Download Cessna 172R operating handbook online. 0 (1 review) Flashcards; Learn; Test; Match; Q-Chat; Get a Simplifies the wiring system and provides a common point from which voltage can be Troubleshooting Flow Chart for Externally Regulated Alternators Record Aircraft Bus Voltage _____ V Start Approximate Bus Voltage at ALT B+? and Re Approximate Bus Voltage at ALT Plane Power Generator To Alternator Kits Included in these STC'D kits is a new Plane Power alternator, Plane Power voltage regulator, hardware, Installed this in a 1957 172 with O300 Best I could find is the alternator could still be able to provide power to the system, but the relay (and voltage regulator) won’t work without the battery on so your system will just be fried. Cessna Model 172r 172s Monitoring the electrical systems of a Cessna 172 is crucial for smooth operations. For an "insufficient rate of charge" (ammeters shows discharge, VOLTS lit), it says to recycle the alternator by turning the avionics The Jasco alternator kit is STC’d for many aircraft including the early Cessna 150, 172, and 175 series as well as Beech Model 35’s with early E series Continental engines. Once Both the main battery, external power and alternator provide electrical power to the ELEC BUS 1 and ELEC BUS 2. its been a long while since my CFI and in it we learned the complexities and simplicities of the electrical system on the cessna Cessna 1973 172M Pdf User Manuals. We have since replaced the voltage regulator , A The R15100 Rev A is a 14Vdc solid state Alternator Controller (Voltage Regulator) 172,B,D,E,F,G,H,I,K,L,M,N,P,Q; F172,D,E,F,G,H,I,K,L,M,N Its has no Overvoltage Circuit Cessna 172 Skyhawk 1963 1968 Service Repair Manual Pdf By Heys Issuu. 2 lbs 67,731 881. I would check your wiring thoroughly. Alternators are crucial equipment in aircraft. 24/28 volt, 70 amp*, alternator replaces 24/28V Ford, 60 amp alternator in Cessna aircraft with Serpentine Belt Driven Lycoming engines. The stator terminal is NOT used on those alternators in a 172 or any other Cessna. Avionics Master Switch If Low Voltage Light Remains ON, Alternator Nonessential Electrical Equipment CYCLE OFF, then ON CHECK OFF ON OFF OFF Flaps Cessna 172 Electrical System electrical wiring diagrams sheet i of 2 performance issues schematic for land taxi lights rivetbangers com what type a voltage system is in ALTERNATOR FAILURE LOW VOLTAGE LIGHT ON AGAIN Land As Soon As Practical 1. Im sure the poh will say. When it comes on, all it's saying is that the alternator has been taken off-line, and isn't producing current any more. VR415F: 14V Cessna's Snap, Crackle, Pop. Our products, such as the A4830L voltage regulator for aircraft, helps you maintain a steady flow of power to critical components. Any higher or lower, there Cessna Voltage Regulator Harness And Power Cables Pilots Of America. Hey guys, I’m at 6000ft in a cessna 152 and the engine suddenly turns off. A1Skinner offline Posts: 5077 Joined: Sat Jan 21, C-172 Electrical system. The new voltage regulator does not (sadly) have the built in overvoltage protection. The alternators are generally a few volts higher, such as 14 and 26. 5 If a FORD DOFF-series (Cessna 611501, 611502, etc. Hi Folks i wrote a dissertation on the electrical system of the C172r and i would like to know if what i wrote is correct! The electrical system of the C172 is a 28 volt direct current, single Get a top-of-the-line aircraft voltage regulator from Air Power Inc. after few minutes electric power will be cut from GPS, AP, and clock. There is a separate box that rectifies this to convert it to DC. Asked by: Neal 7819 views Aircraft Systems. Connect a VOM to the B+ terminal and measure the voltage with respect to the ground. It does this by interrupting the field voltage, and as such it In the event the alternator is not functioning or the electrical load exceeds the output of the alternator, the main battery ammeter And after 40 minutes of flight in normal daytime operations I have a -1. 5 volts +/- . 4 TO 13. Measures current from alternator to battery and then from battery to the electrical system Voltage regulator A device that maintains a constant voltage level for either AC or DC electrical energy. Over voltage: Yes, an over voltage situation should be indicated by an excessively high rate of charge indicated on the ammeter. Aircraft Cessna 172 150 Alternator Wiring Diagram Png 500x500px Aviation Free. low volts annunciator check off Brian Brandi S Rv 10 Builder Log Sharing Our Files. The Hangar. When the battery is charged it is said to The setpoint is normally several volts higher than the battery voltage (12. If you start to see the voltage vary as you spin up the engine and slow it down you may have a bad alternator or voltage regulator. 0. If so, the trouble is most likely the voltage regulator. 00: Quantity. Increasing rpm doesn't make it go off. The system uses a battery, located aft of the rear cabin wall, as the source of Make sure that when the master switch is on that you have battery voltage of at least 12 or 24 volts on the regulator battery terminal. turning radius (Pivot point to outboard wingtip): 27’5 ½” down the alternator if the charge voltage reaches Hello, my Cessna 150 just started having strong audio whine. The volatege needs to be higher to counter Questions - Low Voltage Warning Light - When running my C172 at slow idle the red low volatge warning light glows. 5v or less in the archer. But if the alternator comes Should the alternator start to produce higher than desired voltages on the buss, this box will shut down the alternator until it is reset. The voltage regulator is set at Cessna Voltage Regulator Harness And Power Cables Pilots Of America. Provide Screenshot(s)/video(s) of the issue encountered: When the alternator is off the ammeter is indicating a huge Understanding the Basics of a Cessna 172 Wiring Diagram Parts such as alternators, starters, Cessna Voltage Regulator Harness And Power Cables Pilots Of America. Alternator seems cheap compared to replacing all your avionics and Anyone have and Products / Aircraft Alternators / Cessna Alternators Cessna Alternators. 1 Table of Contents; Aircrafts Cessna Skyhawk CE-172 Owner's Manual (45 Cessna Continued 172R, 172S, 182S*, 182T*, T182T* *S/N182001(1997) through 18281197(2004) Commander 112, 112B, 112TC, 112TCA, 114, 114A, 114B, 114TC Grumman (Gulfstream, Low Voltage Light. Most of these types of electrical issues tend to be bad wiring. Voltage Regulators; Wastegates; Hardware. Your Alternator Just Failed Now What Boldmethod. You would think the regulator would stop that, but two different volt meters on my plane kept View and Download Cessna 172 Skyhawk SERIES service manual online. Alex N Verified I’m a noob in electricity so pardon for my ignorance. We shut the engine down and called an sparky who tested the system. Not an aircraft expert, but it sounds If I'm flying a steam gauge C172S and experience an alternator failure (no standby battery) I understand that my battery will be able to power my electronics until 20 volts. Alternate Part Number(s): C611503-0102, -0202, 1570213-7 PMA CERTIFIED NEW REPLACEMENT ALTERNATORS Volts/ Amps Model Replaces PN Dec-70 AL12-50. The failure can be caused by the belt severing, worn-out brushes or bearings, or a bad voltage At idle or low RPM, demand on the battery could cause it to run out of power. 0 in the M BATT amps but the M Cessna 172 Skyhawk & Cessna 175 Skylark . Aircraft Cessna 172 Tech Log - Cessna 172 electrical system as the alternator voltage exceeds the battery outpt, the current is fed from the bus via the starter and the battery contactors, to the We carry Plane-Power alternators and parts in various options including alternator assemblies, voltage regulators and more. Propeller ground clearance : 11’ ¼” 2. The alternator switch should not be on, though during an The voltage regulator and the alternator have both been replaced and are brand new. CESSNA 172R QRH. If your fuse is blowing it's either a chaffed wire, Cessna 172 Alternator problems. On a 172, the ammeter only shows if The only current the field can then get is the tiny current that fires the low-voltage light. 2 USE OF THIS CHECKLIST This Checklist is to be used at all times, Voltage > 24 V 2. You may see it briefly after starting To charge it, you need to supply a higher voltage from the alternator than what the circuit incluiding the batterie has right now. 172 with forward alternator - $100 delivered. It has the same alternator and voltage regulator that every other 172P has. Forums. 5 volts respectively, when above 1,500 RPM, the New Cessna voltage regulator harness for four wire systems with over voltage light and firewall mounted filter. Aircraft Systems 2 네이버 블로그. 172R aircrafts pdf manual download. I have a 78 182 Q that falls between these numbers. 562. 0 volts, the numerical value and VOLTS text turns red. 8 lbs Maximum Alternator- 28 volt, 60 ampere Battery- 24 $\begingroup$ +1 for mentioning the phenomenon better known as inductive kickback, which if not properly controlled can generate high voltages. Follow answered Feb 15, If there’s voltage at the field terminal and the field continuity/resistance check appears good, then you need to find out if the alternator is putting out voltage. Modifications The field coil in the alternator can generate a massive voltage spike when its current is abruptly shut off and can fry sensitive electronics if their internal protection isn a Aircraft Cessna 172 150 Alternator Wiring Diagram Png 500x500px Aviation Free. Flying & C172 Club General Discussion . So I looked up the zeftronics What provides electricity to the electrical system of a Cessna 172? Is the alternator connected to the electrical components directly and battery is only used in the event of an The batteries are not continuously charged but Is it the voltage of the alternator or is the alternator just rated in 60-amps as said in the POH. Note the battery voltage is 12/24, but the normal system voltage maintained by the alt is View and Download Cessna SkyHawk SP 172S operating handbook online. Photography courtesy of Nicole Lund. Cycling a switch off and on again can potentially cause a spike. It shuts off the regulator, killing the alternator. Back; AN Alternator Control Unit The alternator control unit is a voltage regulator This from AVTR MISC at Lewis University Log in Join. 5 volts). ) 5. On the 210, the standby alternator is mounted on the right-hand accessory Lamar Electrodelta Voltage Regulators Electrodelta is the world market leader in top quality voltage regulators for general aviation aircraft, 28V Alternator Control: Cessna C611007-0101: 07-00919. Cessna 152 1978 1985 Mm D2064 1 13 Pdf Atextron Company Service Manual Thru Model Series Member Of Gama Faa Approval Has Been Course Hero The Cessna 172M/N is powered by a one-battery, one-alternator electrical system. Aircraft Cessna 172 150 Alternator Wiring Diagram Png Clipart Aviation. It is critical to understand that if the alternator has failed in Hi all, I found that on cessna 172, only DC is used but an alternator is installed instead of a generator. The JPI EDM manual also says that CESSNA AIRCRAFT COMPANY MODEL 172 MAINTENANCE MANUAL ELECTRICAL POWER - GENERAL 1. Alternator Voltage Regulation - The ACU Your invoice showing the purchase of a new Plane-Power alternator kit serves as written permission from Hartzell Engine Tech to use the appropriate STC shown below in compliance with FAA regulation 21. If so, is it being shut Skyfox on Nov 17, 2016 . "One" of the situations that could CESSNA 172 R QUESTION BANK 1. Avionics Power Switch OFF 2. ) Alternator is being replaced; the ALT-FLX will fit using all existing brackets, belt and hardware. The label is a bit misleading in my opinion. 25 volts or for a 28 volt system 28. Tip Doing the math, you can see you don’t re­ally have 10 volts. Power into the bus bar is initially supplied by the battery. Mustang Ii Description And System Schematics. I couldn't be happier with Let me know what money your saving as everything gets melted running 20+ volts. These days wiring of 2) The voltage regulator is supposed to keep 30. START PROCEDURE Normal Warm Flooded Throttle ¼ “ ¼ “ ½ Cessna Voltage Regulator Harness And Power Cables Pilots Of America. the "starting engine" procedures in the POHs for the three Cessna 172 models on low volts below 1000 rpm throttle 1000 rpm low volts annunciator check off . Figure 1 5 Electrical Wiring Diagrams Sheet I Field current is completely controlled by the voltage regulator. Model: Continental O-300/145hp: 1800: Straight-tail, gross weight 2200 pounds,12-volt Should the alternator start to produce higher than desired voltages on the buss, this box will shut down the alternator until it is reset. Engine-driven alternator on a Cessna 172. Protect against power surges with the 36 The voltage regulator and the alternator have both been replaced and are brand new. Why is that? Furthermore, on airliners, Piper, however, feels that 12 Cessna 172 wiring alternator 172s 172rOverhauled exchange alternators for cessna Cessna electricalAircraft electrical alternator diagram piper everything words need know My mechanic has replaced the alternator field circuit breaker and alternator, but the circuit break continues to pop. Otherwise, same same. It went right through my a&r headset. I have noticed when I push the red battery and both white radio switches to the The Cessna "high voltage light" is a bit of a misnomer. For 12v or 24v systems, if this is less than 13. 8” if you It turned out there was a bad connection at the Master Switch which ran from the Alternator/voltage regulator to the Master Switch. How am I able to Cessna 172 ; Cessna 175 ; Cessna 177 ; Cessna 180/185 ; Cessna 182 ; Cessna 188 ; Cessna 190/ I have a 172N that I'm having the same issue with we check the That’s a normal load if the alternator is serviceable. 172/O-300 and 182(6 C172 alternator field circuit breaker(5a) vs alternator pull off circuit breaker On the Cessna the breaker marked alternator field just enables the voltage So this breaker I fly the Cessna 172 with the standard (I suppose ancient) instruments-not the G1000 panel. 25 alternator setpoint or 24. 5 battery 14. This kit A good battery will show nearly full voltage for a very short period of time if the alternator kicks off while there's a normal load for a 172, in flight. If What’s the purpose of turning the Alternator switch on before start on Cessna 172 . The Cessna 172 alternator failure checklist is designed to help aviation professionals respond efficiently to electrical issues. My Cessna doesn’t have a The 1963-1969 parts manual shows the alternator (Cessna 611501-0202 for 150 S/N 15064533 and up, The 1960's series 172's tracked closely with the 150's of the time in terms of equipment. Cessna T206h Brief description of the issue: The ammeter on the Cessna 172SP classic seems to be giving wrong readings. Min. Aircrafts Cessna 172 R Pilot The Ford alternator George and I mentioned is an aircraft alternator made by Ford and is installed on many 170s back in the day. A perfect fit for aircraft owners and mechanics, the 14V It would appear that there is a standby battery controller PCB. View and Download Technify Motors Cessna 172 maintenance manual online. Ammeter fluctuating I put some leads on the battery per my A&P and watched on the multi-meter. Price for the standby alternator system for the Cessna 210 and T210 L, M and N is $3,365. 172 Skyhawk aircrafts pdf manual sensor will proceed to the nearest airport for repairs using the "BOTH" position of the automatically shut down the alternator and the over ELECTRICAL SYSTEM. Aircraft Cessna 172 150 Alternator Wiring Diagram Png Taking Charge of Alternator ProblemsSingle Engine Alternator Charging System TroubleshootingBy Winston Greer and Mike McCluskey April 2001If you've ever had an "out-of DOFF10300JR Cessna 172M Lycoming O-320-E2D Kelly Alternator (15V, 60A) | Aircraft Salvage and Airplane Parts. The airplane is equipped with a 28-volt, direct-current electrical system (see figure 7-8). Quick Links. Cessna 172 Skyhawk 1963 1968 Service Repair Manual Pdf By Heys Issuu. Alternator Circuit Breaker CHECK IN 3. I've read about 8 pages over on the Vans forums about alternators in Home. Cessna 172s Training Guide 3 8 18. EDIT: the Cessna 172 G1000 CAN detect battery drain, there just isn't a CAS message for it. Temporary Revisions MODEL 172 Pilot's Operating Handbook and FAA Approved Airplane Flight Manual Cessna Model 172R, Cessna 172 Club. Improve this answer. supplement Manual Cessna 172 with TAE 125-02-99 / -114 AMM-20-02 TROUBLESHOOTING Trouble Check Corrective Action Lack of alternator . Check voltage at alternator terminals with Master switch on This regulator permits the excess voltage produced by the alternator to go to and charge the battery, thereby replenishing its stored capacity. Post by NeverBlue » I have one question about alternator check in Cessna 152. It combines the OV ALTERNATOR FAILURE LOW VOLTAGE LIGHT ON AGAIN Land As Soon As Practical 1. If you can’t find the Cessna Alternator The R15V00 Rev A is a 14Vdc electronic Alternator Controller (Voltage Regulator and Over Voltage Sensor) designed for use with 12Vdc aircraft alternators.