This circuit was found in a Popular Electronics documentation from the 90s. It is possible to switch the frequency of an oscillator by voltage. The circuit can act as a shield.
This circuit was obtained from a 2005 Linear Technology manual. The circuit is self-powered and can...
This astable multivibrator with an operational one at the time was found in the National...
This circuit regulates the alternating voltage of a load at 100 V. The circuit is from Motorola,...