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(Created page with "The '''CGS V8 simulator''' module is a an improved V8 engine simulator and has been an ongoing project of mine for the last twelve or so years. It consists of several circuit...") |
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== A little on how it works ==
[[File:cgs_schem_v8.gif|thumb|center|500px|The schematic of the V8 Simulator.]]
The circuit consists of several distinct blocks. The first is the internal VCO and its associated parts. From the left, there is a voltage follower, the "automatic transmission" and the VCO itself, which is part of a 4046 phase locked loop. As the control voltage at the input is swept upwards, the voltage at the output of the voltage follower will pass the threshold of first the upper schmitt inverter,
The second circuit block is the timing generator. At the left, there is a comparator based around one half of an LM358. This is there to convert any external clock signal into something suitable for the remainder of the circuitry. With the values given, the sensitivity is set at around 1.5V, allowing triggering from signals with a +/- 10 volt swing, or with a 0V to +10 volt swing, both of which are common in modular synths. The output waveforms of some modules will never fall below the 1.4V level, preventing triggering. This can be solved by increasing the value of the 10k resistor between pin 6 of IC1 and ground to 22k.
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