This circuit converts BCD inputs to analog voltages. The operational amplifier must be powered according to the desired output voltage range. The circuit is from documentation from the 90s.
We found this circuit in a 1967 Electronic Design. The circuit used a MOSFET of the time, which is...
This circuit was found in a 1967 RCA SCR manual. It uses period components that can be replaced with...
We found this circuit in the October 1992 issue of Radio Electronics magazine. The duty cycle can...