3 transistors metronome (CB7146E)

Found in 1980s documentation, this circuit uses a small transistor radio output transformer and a double potentiometer for frequency adjustment.

| Clique na imagem para ampliar |

5W Amplifier (CB24852E)
Using the ULN-3784B this circuit typically supplies 5 W at 24 W. However, it can operate from 9 V....
Universal Preamplifier for Microphone (CB960E)
This circuit, from a former publication of 1968 was originally designed for germanium transistors, but with the...
Display Demonstrator (CB24385E)
This circuit simulates an 18-point digital display using light bulbs, but can be adapted to use...