This circuit that mimics the sound of the famous Scottish instrument was found in a Popular Electronics from the 90s. The components are still quite common today.
The simple touch of the fingers on a sensor causes this circuit to drive a motor that goes into...
This simple circuit found in an American 80's documentation simply blames if there are toxic gases in...
This circuit is from Motorola's 1990 Linear Databook. The transistors allow equivalents and the...