Infrared tone transmitter (CB20977E)

This simple very low power circuit can be used in a battery powered infrared tone trigger. We found it in an American documentation from the 90s.

| Clique na imagem para ampliar |

Optical communication transmitter (CB7849E)
This circuit was found in a 90s American documentation. The circuit uses an LED that can be of a...
Damped Oscillator (NI012E)
Damped sine oscillations can be produced when short pulses are applied to the input of this...
50 W amplifier TDA1514A (CB15371E)
We found this circuit in the Philips integrated circuits manual of 1990. The circuit must be...