Found in documentation from the 1980s, this circuit can generate signals between 6 and 8 MHz. The frequency can be slightly varied in the setting. FET is a general-purpose type.
Capacitance to voltage converter (CB6075E) This Texas Instruments circuit can be used on a...
This circuit is the version of the previous circuit with a single source. The transistors are...
This infrared emitter (pulsating) can be used with several other alarm and remote-control circuits on...