Pulsed Infrared Transmitter (CB20981E)

Found in old American documentation, this circuit is current as it uses the 555 to modulate an infrared LED. Pulses are set by R1.

| Clique na imagem para ampliar |

Crossing Counter (CB18133E)
In the proposed circuit, each pulse of light or infrared radiation that hits the photodiode...
Small AM transmitter (CB23704E)
This circuit with the CK722 has a small range. We found it in Radio Electronics magazine from...
Coaxial Driver (CB13426E)
We found this circuit in a 1972 publication. The circuit is indicated for the application of TTL...