Photodiode amplifier (CB20691E)

This high-gain circuit was found in American documentation from the 1990s. The operational amplifier supports a modern equivalent.

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Touch Volume Control (CB17983E)
This circuit is from 2002 documentation, requiring a symmetrical source of 6 to 12 V. The signal...
Alarm and current sensor (CB5285E)
This circuit is from Linear Technology 2005 documentation. The circuit is based on company...
Power supply with LED rectifier (CB22123E)
This power supply that can supply current according to the LEC is suitable for small projects. The LED...