This 1970s RCA circuit can be triggered by light or dark, depending on how the LDR is connected. The controlled load depends on the triac.
This audio circuit has an output power of 1 W. We found it in the Radio Electronics magazine of...
September 2016 - It can be obtained from Mouser Electronics the new voltage regulators (LDOs) to...
This circuit is suggested by National Semiconductor in its Linear Applications Handbook. The...