Tri State Logic Probe (CB5888E)

This simple circuit is powered by the logic circuit itself. Components are still common, although they were obtained from somewhat old documentation.

| Clique na imagem para ampliar |

Two-input flip-flop (CB23553E)
This circuit was obtained from Radio Electronics magazine in May 1958. The circuit uses...
Light Activated Pulsing Alarm (CB26243E)
This circuit was obtained from the 1995 Encyclopedia of Electronic Circuits Volume 5. The circuit...
27 MHz Oscillator (CB24983E)
This tunnel diode oscillator was found in July 1986, Radio Electronics magazine. Note the low...