We found this circuit in a 1964 Electronic Design. The triac and SCR can be replaced with modern equivalents according to the load. The circuit is for 160V network.
This six-decade logarithmic current amplifier was found in a 2005 Linear Technology manual. The...
This circuit supplies a voltage of 42 V, plus a symmetrical voltage of 12 V with 1 A. The voltage...
Based on an operational of the time, this Popular Electronics circuit can be designed with any...