Schematic for SK9446/9447 - diyAudio
Go Back   Home > Forums > Amplifiers > Solid State
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Solid State Talk all about solid state amplification.

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
Thread Tools Search this Thread
Old 6th February 2010, 12:11 AM   #1
diyAudio Member
Join Date: May 2004
Location: Southwest Michigan
Default Schematic for SK9446/9447

Is it possible that anyone can help provide me with a simple schematic to use some specific output transistors I've obtained?

I have the heatsinks and outputs from someone's scrap pile that have two pairs of SK9446 and SK9447 output transistors. Crosses for these are NTE or ECG92 and 93. 9446 are NPN, 9447 are PNP.

I have searched all over the 'net for a datasheet that shows an application circuit design, but no luck.

Anyone able to help me?

thanks! Jim
As for me and my household, we shall serve the Lord. Joshua
  Reply With Quote
Old 6th February 2010, 07:43 AM   #2
h_a is offline h_a  Europe
diyAudio Member
h_a's Avatar
Join Date: Sep 2006
Location: Graz, Austria
If you already know that these are bipolars, you can build whatever bipolar amp meets your liking. No need to use one that uses exactly these parts.

Just make sure somehow that voltage ratings are not exceeded, in other terms, if there's no datasheet or you're not able to find out the amp your parts were in, build a small amp (30W or so) to be on the safe side.

Have fun, Hannes
  Reply With Quote
Old 6th February 2010, 01:16 PM   #3
talonix is offline talonix  United States
diyAudio Member
Join Date: Oct 2006
Location: The Old Dominion
SK was the replacement line for RCA - you won't find an application note - just specs from their cross reference guides. Somewhere along the way, somebody replaced the OEM parts with the SK9446 and 9447. Let me get to work, and I'll post the specs from the RCA SK replacement guide, circa 1992.

  Reply With Quote


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Linn "LINTO" MC Preamp Schematic without SMPS - Schematic for SMPS wanted tiefbassuebertr Analogue Source 41 13th February 2016 05:51 PM
Help with Schematic Rob11966 Tubes / Valves 11 5th December 2007 01:15 PM
Schematic FABIO_IT61 Solid State 1 23rd September 2005 11:48 AM
P 1.7 schematic help MikeW Pass Labs 20 19th June 2005 07:36 PM
Please look over my schematic Lusso5 Multi-Way 2 14th January 2004 09:06 PM

New To Site? Need Help?

All times are GMT. The time now is 05:05 PM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2