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This variable frequency oscillator was found in an old American documentation. Transistors allow more modern equivalents and coil data are found next to the diagram for several frequency bands.
This power supply, found in 2002 documentation, uses fixed 1 A regulators for the power output. The...
This infrared emitter (pulsating) can be used with several other alarm and remote-control circuits on...
The circuit output shown is compatible with CMOS technology. The transistor is 2N2222 and the...