Has anyone thought about implementing something like this to protect the IRF510?? I am still waiting on a reply from the post office, to see where mine is.? It looks promising, especially if it protects the IRF510.? It would have to be changed, to limit to about 1.5A.? From the page:
"Once I got tired of replacing the FETs, I built a current sense circuit, which shuts off the bias once the amplifier draws more than about 3 amps from the PSU. I think this circuit is essential. You can build it into the Power Supply or into the Amplifier. I built it into the Amplifier because the power supply, which is also homemade, does not limit until 7 amps. With the current limit circuit the amplifier now survives transmitting into any SWR from an open circuit to a short."
