This circuit with output powers of 2 to 3 W depending on the power supply was found in the magazine Radio Electronics of April 1990. The speakers are 8-ohm.
This analog meter circuit was found in the September 1989 issue of Radio Electronics magazine. The source...
This 1967 Electronics World circuit is suitable for frequencies up to 1 MHz. The setting applies...
Maxim Integrated's MAX17682 integrated circuit is available at Mouser Electronics, a...