Ken Stone/1973 classic Serge/Serge peak and trough: Difference between revisions
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== How it works ==
[[File:cgs_serge_schem_serge_r3.gif|thumb|center|
Functionally it is remarkably simple. Diodes form the linear equivalent of an OR gate or an AND gate. There is a 0.6V voltage loss across the diodes. This is followed by a complementary emitter follower which loses 0.6 volts in the opposite direction, thus compensating for the loss in the diodes. A constant current source acts as a pull-up or pull-down for the emitter follower. The "no inputs" base state is derived from a resistor pull-up or pull down to an appropriate voltage rail, while using another diode to clamp it to either 6 volts (trough) or 0 volts (peak). FD6666 diodes were used, though any common silicon signal diode would do. Generic general purpose silicon signal transistors can be substituted.
== Construction ==
{| align="center"
| [[File:cgs_serge_peak_and_trough_pcb1.jpg|thumb|center|
|}
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