This circuit found in a 1964 US publication reverses the signal level by providing 9 to 0 V outputs from 0 to 9 V signals. Transistors may be equivalent.
This musical doorbell was found in a Popular Electronics from the 90s. The U4 melody generator...
This circuit was found in a 2005 Linear Technology application manual. The circuit is based on the...
This oscillator produces a signal with a central frequency in 1 MHz. This frequency can be...