burdij

Miniature Headphone Amp
« on: November 29, 2007, 10:20:09 AM »
This is a miniature headphone amp to add to projects for monitoring purposes.

The board is approximately .8 x 1.125 inches and contains a stereo level control. Each amp is a MC33083 op amp driving a bipolar emitter follower. The biasing diodes are thermally coupled to the output transistors. The output is coupled with a tantalum 47uf capacitor to the headphone. Each channel should be able to do about 300mW into a 55 Ohm load.





Ptownkid

Miniature Headphone Amp
« Reply #1 on: November 29, 2007, 12:54:16 PM »
nice! :thumb:


 

Related Topics

  Subject / Started by Replies Last post
Miniature Tube DI Idea

Started by « 1 2 3 » The Lab

50 Replies
22948 Views
Last post December 01, 2008, 09:57:44 PM
by Whoops
11 Replies
8084 Views
Last post October 02, 2004, 10:23:47 AM
by gyraf
1 Replies
1430 Views
Last post May 30, 2005, 03:55:58 PM
by bcarso
10 Replies
3536 Views
Last post August 16, 2008, 09:43:26 PM
by Sorr