Print Page - Total recall 2.2uf

Title: Total recall 2.2uf
Post by: darrenw6000 on June 24, 2016, 08:22:16 PM

The 2.2uf bipolar cap in this build, is that just a 2.2uf film or a special cap?

Title: Re: Total recall 2.2uf
Post by: alanp on June 24, 2016, 08:39:08 PM

If it's specced specifically as bipolar, then it's probably a bipolar electrolytic (most electro's are polarised.)

This would have been used in place of a film cap for physical size reasons.

Title: Re: Total recall 2.2uf
Post by: darrenw6000 on June 25, 2016, 11:21:34 PM

I have got a small 2u2 film cap by wima. Couldn't I use this for this project or does it need to be electrolytic.

Title: Re: Total recall 2.2uf
Post by: davent on June 25, 2016, 11:38:42 PM

Should be fine as long as you can fit it to the PCB.

dave

Title: Re: Total recall 2.2uf
Post by: Scruffie on June 25, 2016, 11:44:40 PM

It just has to not have a polarity so not a straight up electroyltic or tantalum.

There's also the option of tying the negative lead of 2 x 4.7uF Electro caps together and putting the positive lead of each in to the pads as it was on the original DMM.

Title: Re: Total recall 2.2uf
Post by: darrenw6000 on June 27, 2016, 11:28:12 PM

Title: Re: Total recall 2.2uf
Post by: Orbis_Ignis on June 29, 2016, 12:46:02 AM

I just used two 1uF film caps in parallel to get as close to 2.2uF as I could get. I picked the ones I found that were the largest values. I think I ended up with 2.1+uF

Title: Re: Total recall 2.2uf
Post by: darrenw6000 on June 29, 2016, 10:46:42 AM

ok. what about the trimmer positions, i am useless at getting them right, where are yours set?

madbeanpedals::forum

Projects => Tech Help - Projects Page => Topic started by: darrenw6000 on June 24, 2016, 08:22:16 PM