Questions about this circuit (MXR Noise gate)

Started by Xavier, November 13, 2006, 03:55:29 AM

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Xavier



I'm going to make a perf layout for this, but I have a question. As far as I understand, the diagram shows the use of a momentary switch, so that leads me to ask two questions:

- Can I just jumper that switch and just use the "normal" 3pdt?

- As the circuit is also a buffer ("line driver") it should be always on and that's the reason for the momentary switch?

- If I supress the switch, can I also supress other parts of the circuit?. Looks like the transistor just above the switch is part of the switching circuit?

Thanks in advance for your help, as always

d95err

Quote from: Xavier on November 13, 2006, 03:55:29 AM


I'm going to make a perf layout for this, but I have a question. As far as I understand, the diagram shows the use of a momentary switch, so that leads me to ask two questions:

- Can I just jumper that switch and just use the "normal" 3pdt?

- As the circuit is also a buffer ("line driver") it should be always on and that's the reason for the momentary switch?

- If I supress the switch, can I also supress other parts of the circuit?. Looks like the transistor just above the switch is part of the switching circuit?

Commercial mass-produced effects generally don't use true bypass, so I assume the original circuit had a latching switch used to turn the effect on or off. You can ignore the momentary switch and use true bypass instead, but then loose the line-driver capabilities of the circuit. Perhaps it's better to use an SPST latching switch instead of true bypass for this circuit.