Lead Acid Battery Charger (CB26301E)

This power charger was found in a 1990s issue of Popular Electronics. Integrated circuits must be equipped with a heat sink.

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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...