This 80's documentation circuit includes an amplifier of the era. Used integrated circuits are uncommon today but can be used equivalents.
In applications where there is no danger of any contact with live points on the circuit by the...
This circuit was found in a Signetics documentation from the 1980s. The integrated is a PLL and...
We find this circuit in a 1970 publication. Transistors can be replaced by current equivalents and LDR is...