CMOS Siren (CB26157E)

Found in the 1991 Electronics Experimenter Handbook magazine, this circuit has good power and is recommended to be triggered by light.

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5 W Class Amplifier (CB13674E)
This unusual audio amplifier configuration was obtained in a 1974 documentation. The PNP...
High Power MOSFET Amplifier 4 (CB10996E)
This circuit was obtained in a 1990 English magazine. The circuit can be assembled with equivalent power...
Light Level Meter (CB21049E)
Found in National Semiconductor documentation, this logarithmic meter is powered with a voltage of only...