This old fashioned transistor amplifier was found in a publication of the year 1958. Transformer are the critical components in the circuit and power comes from 6 D cells.
The frequency of the produced sound depends on the capacitor. With capacitors of known values, you can...
This circuit is from a 1982 publication. How about waking up to the first rays of sunlight? No,...
July 2017 - Microchip's new MCP39F511 demonstration and development boards, which consist of...