Ameba Transmitter (CB21873E)

We found this small FM transmitter in an Australian publication from 1991. The 3-transistor circuit has a range on the order of 400 meters.

| Clique na imagem para ampliar |

Mechanical Oscillator (CB20496E)
This circuit can be used in decoration or to draw attention, in a “fake” assembly for example. What he...
100 kHz Tunnel Diode Oscillator (CB1335E )
This basic oscillator with tunnel diode generates a 100 kHz signal with 1 uW output power. The...
Touch gain control (CB22143E)
This circuit is from an English book from the 1980s. Transistors can be general-purpose types of...