We found this circuit in a 90s Radio Electronics. The circuit generates frequency-modulated 220 kHz signals. The components used are still common.
This power supply was originally developed for the CIR10160, but can be used with other VHV (Very...
We found this circuit in an old American documentation. The circuit can be applied to modern...
We found this circuit in a Philips documentation from 1965. The circuit uses a common LDR sensor...