Grayscale NTSC Generator (CB21316E)

This circuit was found in a 73 magazine for radio amateurs. Components are still common today.

| Clique na imagem para ampliar |

High Voltage Inverter (CB25669E)
For experiments with ionization chambers and Geiger valves this circuit generates high voltage from...
Simple DC Motor Control (2) (CB11600E)
This control allows to start or stop a motor up to 3 or 4 A with a low intensity signal. The...
Solar beacon (CB20489E)
The battery is charged by the photocell that keeps the low consumption beacon in the dark. The...