This circuit is from a 1967 General Electric SCR manual. The circuit supports other SCRs depending on the power of the controlled load. The control is half wave.
In this amplifier, the supply voltage is 35 V and the input resistance is 2k2. Equivalent...
This high speed laser diode driver was found in a 1980s documentation. Power FETs can be replaced...
This instrumentation amplifier with differential inputs was found in documentation from the 90s....