Re: Analog switch configuration

martin griffith wrote:
Try putting a 100K to gnd before the 1uF
try a 22uf in series of the o/p of the opamp, then a 100K to gnd

I tried this and unfortunately, I did not notice any difference. If
this did work, how does the 100K actually eliminate the click?


Also put a scope on the o/p of the opamp see if there is anything
funny happening

I finally was able to probe the output and noticed something
interesting...well, to me at least. I decided to connect the output of
the second switch (right hand in the pic) to a capacitor (~ 2uF since I
didn't have any other values). I just wanted to see the output on the
scope and was hoping to eliminate the DC bias of the audio signal.
However, when the switch switches, the signal bias shifts from 0V to
300mV. Not sure why.

Thank you!

.

Relevant Pages

  • Re: Analog switch configuration
    ... If I disconnect the inverting opamp and just directly connect the NO ... This still leaves the problem that pispaspos is switching a signal ... which means that all the switched signals must be no more than ... o/p switch just switches between the input and the inverted ...
    (sci.electronics.design)
  • Re: Reset-Switch for a 8580-111?
    ... The power switch is a real "Power Switch" for mains-AC. ... You need to pull it off GND, but that turns down the main PSU within the PSU ...
    (comp.sys.ibm.ps2.hardware)
  • Re: Voltage Gain Switch (Design Help)
    ... When the switch is at ground, ... I think you will forgive me when I tell you that it was roast beef, fresh green beans from the garden, fresh carrots from the garden and potatoes also from the garden. ... This circuit can be improved somewhat by placing a small capacitor from A to GND. ...
    (sci.electronics.design)
  • Re: Voltage Gain Switch (Design Help)
    ... When the switch is at ground, the circuit is simple. ... fresh carrots from the garden and potatoes ... to GND. ...
    (sci.electronics.design)
  • Re: 8 switches
    ... >>>if i close one switch, i want the main circuit to be complete, however ... >>>if more than one are closed, i want the circuit to remain open. ... > GND | ... >reference divider) will be at 4.5V, the outputs of both comparators ...
    (sci.electronics.basics)
Quantcast