Generator AVR

[rasmus]

Hello

what are the best logic/way behind generator AVR (Automatic Voltage Regulator) troubleshooting ?. What will you look for first and what is the proper way to test these things ?



Thanks in advance guys

 

[duke37]

You will need to find out the broad principles of the generator and regulator to determine what to test.

What are the symptoms? To much or too little output.

I would separate the generator from the regulator and put a variable supply into the regulator and observe the output.

Let us have specifications and pictures of what you have.

 

[rasmus]

What are the symptoms? To much or too little output.

Too little or almost no voltage most of the time is the problem that i face with generators.

I would separate the generator from the regulator and put a variable supply into the regulator and observe the output.

By variable supply you mean a Variac ?



PS

just to mention this is not a current problem that i am dealing with at the man time

 

[duke37]

A Variac would do if the generator is AC and has a similar voltage output to the Variac.

The energising voltage is possibly low voltage DC. You could try using a Variac to drive a 12V battery charger to provide variable excitation and measure the resulting output voltage.

Divide and rule.

 

[debe]

Asuming its a 110/240v ac gen. Heres the circuit of a typical cheep generator AVR, & voltages. A common problem is dry solder joints on the switching MOSFET. These AVRs are quite cheep on Ebay.