This circuit was obtained in a General Electric documentation from the 80's, and can be used as a shield. The circuit supports current equivalent components.
This circuit found in a European publication from the 1980s, is based on PLL 566. The frequencies...
Using two PUTs this circuit generates signals as shown in the figure. The circuit is from a Radio...
This circuit is from National Semiconductor documentation from the 90s. The components are from...