LED Flasher Unijunction (CB22144E)

The frequency of this circuit depends on the capacitor. The unijunction transistor can be the 2N2646.

AD590 or AD592 Temperature Sensor (CB25446E)
This circuit allows you to read temperatures with a common digital voltmeter. We found it in the...
Bandpass filter with two operational (CB20939E)
This circuit makes use of two transconductance operators. We found it in National Semiconductor...
200 W 12 V to 115 V inverter (CB7153E)
This circuit was found in Philips documentation from 1969. The components are from the time...