Found in a Popular Electronics this circuit has double regulation. The integrated circuits used provide a maximum current of 1 A and must be provided with heat sinks.
This circuit is from the Linear Applications Handbook from National Semiconductor, providing an...
This Radio Electronics circuit, in an 80's edition, decodes the 67 kHz signal used at the time to...
This circuit distorts the voice of the speaker to the microphone thus making it difficult to...