[1861] Mosfet Booster Modules

Date: October 6th, 2015 | Comments : [4] | Categories: DIY.

AMZ Mosfet Booster

Pre-assembled AMZ Mosfet Booster modules are here and I’m excited about them. I connected up a module last night and did some bench testing and it was terrific!

These are pc boards with all parts installed. No worries about hard-to-find through-hole mosfets or other parts. Small enough to fit in a 1590A aluminum box. This is the classic AMZ booster circuit and complete assembly instructions are sent to all purchasers of the modules. (Fairchild BS-170 transistors used on module.)

Modules are now available for purchase.


4 Responses to “Mosfet Booster Modules”

[751614] Bertrand Says: 3:15 am, October 22nd, 2015

Thank you Mr Orman for sharing your knowledge and skills ! I’ve just built a mosfet booster (on a stripboard)and it works great. Only it’s a little too bright for me. It’s a very nice brightness but… well… I’m not looking for brightness at the moment ! Is there any way to roll it off ?
On the jfet buffer for instance (another easy but really cool project, by the way) your advice was to reduce the value of the twin resistors to roll of some highs ; is there any similar operation with the booster ?

[751726] admin Says: 8:43 am, October 22nd, 2015

Reduce the value of the R3 10M resistor to 1M and see how that sounds.

regards, Jack

[752017] Bertrand Says: 1:22 am, October 23rd, 2015

Thank you very much for your answer, I’m going to try it tonight and will let you know about it. I’m also going to modify my DS-1 according to your advice. Actually, it’s a stock post-1994 model and I’m going to combine your mod and Brett Miller’s MIJ mod. It should be interesting…
Have a good day !
Regards, Bertrand

[753586] Bertrand Says: 7:35 am, October 28th, 2015

Hi again,
Done : my AMZ Mosfet Booster is fully operational, with a 1M resistor (R3) instead of 10M and… it sounds really great ! It’s not going to leave my pedalboard, along with the jfet buffer.
A warm handshake (is that how you say in English ?…) for these cool projects !

Regards, Bertrand


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