Difference between revisions of "CGS analog logic voltage processor"

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* 1M – Log response – Finer control near center of rotation. Greater sensitivity towards ends of travel.
 
=== Notes ===
* With no inputs connected, the AND module output will sit at approx. +10V.
* With no inputs connected, the OR module output will sit at approx. -10V.
* If you wish to have a panel mounted pot to set the maximum voltage for the AND/NAND module and the minimum for the OR/NOR module, they can be wired in with the pots connected between the outputs of the transistor regulators (+10V and -10V) with their wipers fed via a signal diode to pin 10 of the corresponding voltage follower. This is possible because the "perfect diode" is not required in this circumstance. Use a pot of 5k or 10k to get a more linear response. Higher values will work, but the pot response will be decidedly curved. Additional "inaccurate" inputs for other voltage sources could also be added in a similar manner – with a diode and series 1k resistor wired into the corresponding voltage follower. These "inaccurate" inputs will be affected by the output impedance of what is driving them, so do not be surprised if it responds differently when connected to different modules.
* While untested, the module should work on +/-12 volts, though you will need to adjust the resistor networks for the +/- 10 volt regulators if you wish to maintain the range (use 2k2 resistors instead of the 4k7 resistors for the two transistor base resistors).
* A 10 to 22 ohm resistor can be used instead of the ferrite bead. If you don't care about power-rail noise, just use a link instead.
 
== Parts list ==
| CGS26 v2.1 PCB||align=right|1
|}
 
=== Notes ===
* A 10 to 22 ohm resistor can be used instead of the ferrite bead. If you don't care about power-rail noise, just use a link instead.
 
== See also ==
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