Short circuit protection
Short circuit protection
(OP)
I have 220V 800W toroidal tranformer. Output is 36V. I want to use this for various experiments. I wish that it would be impossible to ruin transformer by accidental short circuit or overcurrent. I think of powering the transformer through relay and wiring some analog circuitry that detects voltage peaks on current sense resistor and switches power off if some threshold is reached. Is this reliable or maybe i need especially fast circuitry for this? Are there easyer ways to reach this goal?






RE: Short circuit protection
RE: Short circuit protection
2) Where do you expect the short circuit? The torroid is not going to be affected with primary side short circuit. Secondary short circuit you can limit the current by selecting proper guage winding wire. In any case primary fuse is always good for protection.
3) Where do you want to detect the Voltage peaks? 36 volts side or 220 Volts side.
4) I agree with the contributor primary fise should take care of protection. Even glass fuse should be ok.
5) What is the load on secondary 36 Volts.
6) why are you consdering relay and contacts?.
Marvin
RE: Short circuit protection