This stereo meter-indicator was found in the August 1971 issue of Radio Electronics magazine. The transistors are known types and BC548 equivalents can be used.
This sensitive electrostatic charge detector uses only common discrete components. The circuit can be...
The intensity of an audio signal can be controlled by a remote potentiometer on a DC circuit,...
The circuit shown in figure 6 provides a TTL logic signal at its output, when the LM3911...