Soft-Start Circuit For Power Amps The delay time for all circuits shown has been revised. The optimum is around 100ms - sufficient for around 5 full cycles at 50Hz, or 6 cycles at 60Hz. It is also quite alright (02-Apr-2007)---919
Sound Controlled Flip Flop Here is a very inexpensive solution to many phono-controlled applications like remote switching on (10-Sep-2005)---174
Stage and Recording Mixer Able to be built in modular form, allowing as many (or few) channels as desired. (10-Sep-2005)---179
Stereo Channel Selector This circuit has provision for connecting stereo outputs from four different sources/channels as inputs and only one of them is selected/connected to the output at any one time.
(10-Sep-2005)---168
Stereo Width Controllers 2 to choose from. Expand or contract the stereo sound stage (09-Sep-2005)---143
