This circuit was found in a 1969 Mullard documentation. Used transistors can be replaced with modern equivalents. Output transistors may be BD135 and 136 with heatsinks.
The integrated circuits used in this 1999 project are not very common today. However, they can be...
This circuit is from a 1992 Electronics Handbook. The circuit generates a special tone effect for...
This circuit was found in a 90s documentation from National Semiconductor. The integrated circuit is from...