Author Topic: Current lover flanger  (Read 497 times)

bettsaj

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Current lover flanger
« on: August 26, 2018, 02:03:04 AM »
I've just built a current lover and have a couple of questions regarding the build.
First off, although I'm getting a flanging effect the volume drop when the effect is engaged is huge.... and likely not as it should be. Even with the volume trimmer right up it's way too quiet.
Secondly the LFO led has been connected I assume correctly with the negative short lead on the square pad, and the positive lead on the round pad, as is the standard convention with leds.... however the LFO isn't working.

Cheers in advance

Andy
« Last Edit: August 26, 2018, 05:26:00 AM by bettsaj »

bettsaj

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Re: Current lover flanger
« Reply #1 on: August 28, 2018, 03:27:00 AM »
So, I've changed the polarity on the LED for the LFO and it's now working. Strange as the standard convention for diodes is the negative goes into the square pad, not the other way around.

Anyhow, the volume level is still way too low to be usable.......

drog_trog

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Re: Current lover flanger
« Reply #2 on: August 28, 2018, 04:06:18 AM »
mmm, check you definitely have IC 7 in the right way if so then im thinking a solder bridge somewhere, check your board with a good magnifier.
« Last Edit: August 28, 2018, 04:07:54 AM by drog_trog »

madbean

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Re: Current lover flanger
« Reply #3 on: August 28, 2018, 05:23:37 AM »
So, I've changed the polarity on the LED for the LFO and it's now working. Strange as the standard convention for diodes is the negative goes into the square pad, not the other way around.

Anyhow, the volume level is still way too low to be usable.......

Back when I first started mbp I did LEDs the "right" way, which is LED cathode to the square pad. But, people were constantly hooking up their LEDs backwards so I changed it. People (and myself included) seem to associate the square pad as "positive". It's been like that for so long to change it back now would be disastrous. But, sorry that caused some confusion.

As far as your volume drop, there's not enough info on your build to say for sure the cause but the two things I would look at are the voltages on IC1 and IC7 and double checking all the resistors associated with those two op amps.
I own madbeanpedals (duh). I am part owner of Function F(X).

bettsaj

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Re: Current lover flanger
« Reply #4 on: June 07, 2019, 03:59:06 AM »
I've not looked at this build for a long time.... In fact I shelved the pedal and moved onto other things as I was needed to work on other projects. I've now started to look back on older unfinished projects and this one has reared its head.... I'll check the voltages on the IC's and also for solder bridges. Once i have all the info i'll repost the results.