Tunnel diode astable (CB9250E)

This circuit was found in a 1967 General Electric documentation. The components are from that time. The tunnel diode is difficult to obtain today.

| Clique na imagem para ampliar |

Magic Spring (CB13041E)
Here is an interesting circuit to be used in physics demonstrations involving energy...
Phase Rotation Damped Oscillator (CB12363E)
This circuit, obtained from a 1978 publication, generates damped signals and can be used in...
Photoelectric Sensor with Opposite Cells 741 (CB14645E)
We found this circuit in a manual of optoelectronics from Texas Instruments. In it photodiodes or...