JHS - Angry Charlie V3 (3 band eq)  [traced]

General documentation, gut shot, schematic links, ongoing circuit tracing, deep thoughts ... all about boutique stompboxes.

Re: JHS - Angry Charlie V3 (3 band eq)

Postby Duckman » 29 Mar 2018, 07:10

bugg wrote:
marshmellow wrote:C10 should be at the junction of R8/R9, not at the opamp output.


I won't argue that it should be, but I'm fairly certain that it wasn't.

@marshmellow As long as C10 is in the Vref net, there's no big difference. Check the pics in page 1 of this thread. :thumbsup
User avatar
Duckman
Opamp Operator
 
Posts: 1510
Joined: 20 May 2009, 02:45
Has thanked: 364 times
Have thanks: 125 times

Re: JHS - Angry Charlie V3 (3 band eq)

Postby Duckman » 29 Mar 2018, 07:15

Looks like this is the origin of that elusive tone section :mrgreen:
You do not have the required permissions to view the files attached to this post.
User avatar
Duckman
Opamp Operator
 
Posts: 1510
Joined: 20 May 2009, 02:45
Has thanked: 364 times
Have thanks: 125 times

Re: JHS - Angry Charlie V3 (3 band eq)

Postby marshmellow » 31 Mar 2018, 05:36

Duckman wrote:
bugg wrote:
marshmellow wrote:C10 should be at the junction of R8/R9, not at the opamp output.


I won't argue that it should be, but I'm fairly certain that it wasn't.

@marshmellow As long as C10 is in the Vref net, there's no big difference. Check the pics in page 1 of this thread. :thumbsup


Placing a capacitor of that size on an opamp output is just wrong, regardless of what the "designer" of the pedal did.

http://www.analog.com/en/analog-dialogu ... er-25.html
marshmellow
Resistor Ronker
 
Posts: 417
Joined: 16 Aug 2007, 08:31
Location: Germany
Has thanked: 11 times
Have thanks: 105 times

Previous

Return to Boutique Stompboxes dissected...

Who is online

Users browsing this forum: POTL, roseblood11 and 23 guests