Amplifier for photodiode 1 (CB6787E)

We found this circuit in Harris' 90s documentation. The circuit applies to modern operational amplifiers.

Gain control with 741 and JFET (CB25572E)
This circuit was found in the April 1993 Electronics Now magazine. With it, it is possible to...
Two-Transistor Oscillator (CB1387E )
This old oscillator using germanium transistors has a high impedance headphone as inductor to...
100 mA Piezoelectric Generator (CB25413E)
The circuit in the figure is suggested by Linear Technologies (www.linear.com) and consists of a...