Plecto
Full Member level 5
Hi. I need a way to protect my amplifier against over-current conditions. Are there semiconductors that can break the circuit at a set current and auto reset after a set time? If so, what are they called?
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A very unspecific question, unfortunately. What's the transistor operating point, what's the load (short or overload)? You need to look at transistor SOA curves and fuse characteristics.Will a fast acting SMD fuse blow before a TO-220 transistor blows?
A current limiter will work, but if a fault happens, the current limiter will dissipate a huge amount of heat which again. This will make it do thermal shutdown cycling, which is not good for this particular project.