Hoffman Amplifiers Tube Amplifier Forum

Other Stuff => Solid State => Topic started by: TIMBO on September 07, 2011, 12:08:13 am

Title: IRF820 Stuff
Post by: TIMBO on September 07, 2011, 12:08:13 am

Hi guys, I was looking for some info regarding the IRF820 mosfet and came across some handy uses of this device so i drew these up if anyone has a need to add reverb and tremolo and don't have the room or current for tube circuits.As always this is stuff i found on "the net" so i do not know if it works (Electar30 by Michael J Donovan). Thanks

Title: Re: IRF820 Stuff
Post by: tubenit on September 08, 2011, 06:57:29 am

Timbo,

VERY cool!!!  Thanks for sharing that.  Good stuff to know.

with respect, Tubenit

Title: Re: IRF820 Stuff
Post by: Fresh_Start on September 08, 2011, 09:45:13 am

The two MOSFETs are arranged similar to a cascode of tube triodes.

Can you share a link to a discussion of these circuits?

Very cool stuff IMHO.

Chip

Title: Re: IRF820 Stuff
Post by: PRR on September 08, 2011, 10:05:54 pm

.

Title: Re: IRF820 Stuff
Post by: TIMBO on September 08, 2011, 11:07:19 pm

This is where i found it. http://www.blueguitar.org/new/articles/other/mikede30.pdf (http://www.blueguitar.org/new/articles/other/mikede30.pdf)

Title: Re: IRF820 Stuff
Post by: TIMBO on September 08, 2011, 11:08:59 pm

Thanks PRR.

Title: Re: IRF820 Stuff
Post by: TIMBO on April 14, 2012, 06:58:42 pm

Hi guy's, More interesting stuff, it may help to understand how these little buggers work.
http://www.hawestv.com/ (http://www.hawestv.com/)

Title: Re: IRF820 Stuff
Post by: PRR on April 16, 2012, 12:13:27 am

Mechanical TV??

Title: Re: IRF820 Stuff
Post by: tubenit on April 16, 2012, 11:53:39 am

What about using those to create an active FX loop like a D-lator?

Anyone tried this?

With respect, Tubenit