Hoffman Amplifiers Tube Amplifier Forum

Other Stuff => Effects => Topic started by: tubenit on May 28, 2012, 06:58:28 pm

Title: Mosfet FX loop
Post by: tubenit on May 28, 2012, 06:58:28 pm

Guys,

Do you think this would work to use mosfets instead of a tube for a D-latorish style active FX loop?

Revised the schematic and reposted it.

With respect, Tubenit

Title: Re: Mosfet FX loop
Post by: sluckey on May 28, 2012, 10:19:13 pm

What does the original circuit look like?

Title: Re: Mosfet FX loop
Post by: Geezer on May 28, 2012, 11:21:59 pm

Quote from: sluckey on May 28, 2012, 10:19:13 pm

What does the original circuit look like?

Steve,

Sorta like this....

G

LND150 Datasheet>  http://www.datasheetarchive.com/LND150-datasheet.html# (http://www.datasheetarchive.com/LND150-datasheet.html#)

Title: Re: Mosfet FX loop
Post by: sluckey on May 29, 2012, 06:23:27 am

I think it's doable. May not even need tweaking.

Title: Re: Mosfet FX loop
Post by: TIMBO on May 29, 2012, 02:34:29 pm

Looks good T, I assume this circuit won't draw much current?? As i am already close to max with the transformers i have on the little wing

Title: Re: Mosfet FX loop
Post by: tubenit on May 29, 2012, 08:25:04 pm

I am thinking this might be better.

with respect, Tubenit

Title: Re: Mosfet FX loop
Post by: jojokeo on July 14, 2012, 01:12:46 pm

Hi tubenit,
Have you tried this on your amp yet? JFETs appear to be "plug and play" but they aren't that easy as they need to be biased properly same as using tubes. I just discovered this LND150 on own about a month ago. (wish I'd been looking at these threads in SS before now as you guys are as usual ahead of the curve - "my curve" anyway)

Title: Re: Mosfet FX loop
Post by: tubenit on July 15, 2012, 05:58:16 pm

Haven't tried it and decided to not build it.  Sorry.

With respect, Tubenit