Circuit for sleep mode (CB8430E)

This circuit was found in a 90s Electronic Design. It uses integrated circuits that are not common today.

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High voltage probe (CB19747E)
This is a high voltage probe that allows the measurement of high continuous voltages with a common...
15 W Class D Stereo Audio Amplifier (CB12538E)
The circuit shown in figure is suggested by Texas Instruments (www.ti.com) and makes use of the...
Fuzz Distortion Pedal (CB11247E)
This well-known configuration of the guitar effects pedal was obtained in an English magazine from...