Stair Generator (CB9141E)

Found in an old Radio Electronics, this circuit uses common components today. The resistors of the IC output determine the stair steps.

| Clique na imagem para ampliar |

Crystal Radio (CB19987E)
This crystal or galena radio is one of the many versions available on this website. This is from a...
Crystal Calibrator (CB21783E)
This circuit generates a 1 MHz signal for general equipment calibration. The circuit is from an...
4-FET Transmitter (CB19452E)
This transmitter circuit for the 27 MHz band uses 4 common FETs and has the details of the coils...