This circuit was found in a Hands On Electronics from the 90s. The circuit does not need a symmetrical power source. The signals with which it operates are alternating.
This circuit that simulates the sound of a drum is part of an article published in the Radio...
This circuit was obtained from an Application Note from Linear Technology that manufactures the used...
This is a well-known RC oscillator configuration using a 741 operational amplifier. The circuit is from...