This circuit uses only transistors and was found in a 2003 documentation. Transistor 2N3055 must be mounted on a heat sink and the voltage is set to R10.
Suggested by Maxim in documentation from the 90s, this circuit has its response curve given next to...
Found in a 1969 Ferranti documentation, this circuit uses only bipolar transistors from that time....
Found in a 1960 General Electric documentation, this crowbar circuit blows the fuse in case of...