Go Back   Home > Forums > >

Solid State Talk all about solid state amplification.

Step up transformer on p channel follower
Step up transformer on p channel follower
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools
Old 3rd November 2010, 02:19 PM   #1
AudioGeek is offline AudioGeek  United States
diyAudio Member
 
Join Date: Jan 2004
Location: Minnesota
Default Step up transformer on p channel follower

i want to run a P channel follower as input buffer on a se class a mosfet amp. Similar to the Pass design of using the Zetex ZVP3310 with a 47K resistor on gate and just a load resistor to the power supply to bias the mosfet to correct current. sooo... 20v supply - 3.5v drain to source drop is 16.5v / say 100mA is 165 ohm resistor.

think is i want to switch out this resistor for a step up transformer. specifically a 1:10. if the primary dc resistance is not 165 can i add a resistor in series to make up the difference??

also, if the secondary of this transformer is driving say a irfp240n gate and no resistor load is connected across the secondary... how do i figure out the Z ratios of this transformer? and also what the minimum primary L should be?

simulating this seems like 1H is minimum and 1K secondary resistance is max.

thanks for any help.
__________________
My Signature
  Reply With Quote
Old 3rd November 2010, 08:10 PM   #2
pieter t is offline pieter t  Netherlands
Account disabled at member's request
 
Join Date: Apr 2009
Hello Richard,

Is your circuit comparable to Susan Parker's Zeus amplifier?
She is using N channel fets in a PP source follower configuration, and an interstage step-up transformer in the sources with a step-up ratio for voltage amplification ahead of the power stage, but the idea might be the same?

Pieter
  Reply to this post

Reply


Step up transformer on p channel followerHide this!Advertise here!
Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
N-channel only output devices in a power follower. x-pro Solid State 23 6th August 2009 01:50 PM
Step Down Transformer Ropie Power Supplies 3 15th October 2006 09:42 AM
Can I use a step-up transformer as step-up? cviller Parts 5 6th September 2006 06:32 PM
Using one transformer to step down another. Shoog Solid State 9 28th August 2003 10:00 PM
P channel follower hancock Pass Labs 3 2nd January 2003 02:41 AM


New To Site? Need Help?

All times are GMT. The time now is 10:58 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2021 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 14.29%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2021 DragonByte Technologies Ltd.
Copyright ©1999-2021 diyAudio
Wiki