several voltage regulator burn
Hello
I have burned several VR (solid state) they do not burn instantly, it takes a while. It all started when I took the engine out to make some upgrades.
When they delivered the car to me I noticed that the regulating voltage was 12.9 V, before it was more than 13V and cruising 13.7v and before 14-14.2 v
When I returned home at a traffic light I saw that the voltage had risen to 16-17v. II checked the VR and the transistor was burned, I changed it and it started working again but not with the original voltage values.
With this trial and error I have already burned 4 VR, the other times the circuit was open and the alternator did not charge, the car only ran on battery.
I checked the alternator, Powermaster 95A Mopar round back style, OK.
I checked all the grounds: Battery to the chassis, battery to the engine and a direct ground cable from the battery to the VR. Everything ok but the transistor raises temperature until it burns.
I did a transistor upgrade with a higher IC collector current, and I had time to prove that when regulating there was a drain of >30A... I changed the battery and the drain regulated lowered to 6A, regulating the voltage was 13.2v and cruising 14.0v
I thought I had found the problem and that it was the battery.
I made a 65 mile trip and everything went well, but on the way back the VR burned again.
any ideas.
my setup is a sb mopar 418ci with a Holey HP ecu with Terminator TBI, C-N-P IGN-1A coils. Powermaster 95A dual field (one field to ground)
Hello
I have burned several VR (solid state) they do not burn instantly, it takes a while. It all started when I took the engine out to make some upgrades.
When they delivered the car to me I noticed that the regulating voltage was 12.9 V, before it was more than 13V and cruising 13.7v and before 14-14.2 v
When I returned home at a traffic light I saw that the voltage had risen to 16-17v. II checked the VR and the transistor was burned, I changed it and it started working again but not with the original voltage values.
With this trial and error I have already burned 4 VR, the other times the circuit was open and the alternator did not charge, the car only ran on battery.
I checked the alternator, Powermaster 95A Mopar round back style, OK.
I checked all the grounds: Battery to the chassis, battery to the engine and a direct ground cable from the battery to the VR. Everything ok but the transistor raises temperature until it burns.
I did a transistor upgrade with a higher IC collector current, and I had time to prove that when regulating there was a drain of >30A... I changed the battery and the drain regulated lowered to 6A, regulating the voltage was 13.2v and cruising 14.0v
I thought I had found the problem and that it was the battery.
I made a 65 mile trip and everything went well, but on the way back the VR burned again.
any ideas.
my setup is a sb mopar 418ci with a Holey HP ecu with Terminator TBI, C-N-P IGN-1A coils. Powermaster 95A dual field (one field to ground)