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Momentary Switch Question

Posted: Sat Mar 23, 2013 4:30 pm
by lotus_eater
Hi! I'm building a Devi Ever Sodameiser kit right now, and for the chaos (oscillation) mode I need to remove one of the caps from the circuit. I wanted to do this with a DPDT Momentary switch. Do I just solder the cap to one side of the lugs and run wire to the pcb where it should go? I'm confused! :idk: Any help would be really appreciated!

Re: Momentary Switch Question

Posted: Sat Mar 23, 2013 6:18 pm
by eatyourguitar
you need to post a link to a schematic

Re: Momentary Switch Question

Posted: Sat Mar 23, 2013 7:58 pm
by Dr Satan
You need a SPST NC switch between the .1uf and the 10k/2.2M/.1uf collector junction (or between the .1uf, .1uf/2.2M and base junction). That will leave the cap in and when you press and hold the switch it will lift the cap out of the circuit.
                                                               1
                                                               0
                                                               k
                                                               l
                                                               l
---------.1uf--------/ SPSTNC switch /-------0-------.1uf--------
      l                                                        l
      l                                                        l c
      l                                                        l o
      l-----------2.2M resistor------------------l l
      l                                                        l l
      l                                                        l e
      l                                                        l c
      l                                                        l t
      l                                                        l o
      l                                                        l r
      l----------------------base-----------------O
                                                               l e
                                                               l m
                                                               l i
                                                               l t
                                                               l t
                                                               l e
                                                               l r
                                                               l
                                                          ground

Re: Momentary Switch Question

Posted: Sun Mar 24, 2013 11:15 am
by eatyourguitar

Code: Select all

                                                        1
                                                        0
                                                        k
                                                        l
                                                        l
----.1uf--------/ SPSTNC switch /----0-------.1uf--------
      l                                                 l 
      l                                                 l  c
      l                                                 l  o
      l-----------2.2M resistor-------------------------l  l
      l                                                 l  l
      l                                                 l  e
      l                                                 l  c
      l                                                 l  t
      l                                                 l  o
      l                                                 l  r
      l----------------------base-----------------------O
                                                        l  e
                                                        l  m
                                                        l  i
                                                        l  t
                                                        l  t
                                                        l  e
                                                        l  r
                                                        l
                                                       ground


I couldn't read it so I tried to fix the spacing for you. I hope i didn't break it by moving stuff. Dr Satan maybe you want to try a free program like diy layout creator, ltspice, eagle, diptrace etc.. to draw schematic. its really easy and fast. you just take a screen shot of your schematic and post the image. ascii art is cool but I'm guessing that it is tedious work to draw it by hand with text :?: anyway thanks for taking the time to dig up the devi schematic and redraw it. :thumb:

Re: Momentary Switch Question

Posted: Sun Mar 24, 2013 11:43 am
by Dr Satan
I have most of those programs, I had just been working with them all day designing some layouts and needed a break. Alt + 255 and some copypasta is cake. I can even triforce.

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Re: Momentary Switch Question

Posted: Sun Mar 24, 2013 5:52 pm
by lotus_eater
Thanks for the help! :)

Re: Momentary Switch Question

Posted: Mon Mar 25, 2013 3:06 am
by theavondon
Dr Satan wrote:I have most of those programs, I had just been working with them all day designing some layouts and needed a break. Alt + 255 and some copypasta is cake. I can even triforce.

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Bro, nice.