help me about comparator(such as lm319,lm339) - diyAudio
Go Back   Home > Forums > Amplifiers > Class D

Class D Switching Power Amplifiers and Power D/A conversion

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 Search this Thread
Old 19th May 2005, 12:57 PM   #1
canghai is offline canghai  United States
diyAudio Member
 
Join Date: May 2005
Location: on the world
Talking help me about comparator(such as lm319,lm339)

hello everyone I am happy to find this good forum.
recently I have some trouble about class D amplifiers,please help me.

my design is to compare an ac signal with analog ground. ac signal is sampled from electric net who's frequency is 60HZ and peak value is -2.5 to 2.5 volt. while the value is positive,I want the amplifier output 5v TTL compatible level,while it is negative,the amplifer output 0v TTL compatible level.

what amplifier I should be use? I only have lm319.and lm339.

since lm339 is of sigle power supply.
I think should chose lm319.

when compare the ac signal, a hysteresis resisters network should be added. I suppose that when signal is bigger zhan 0 volt,the amplifier output 5v,when signal is smaller than 0.4 volt
the amplifier output 0v, and the power supply of the amplifier is
+-15 v , how to connect circuit???
thanx for all friends who thinks about thies problem
if your reply attached with a picture, it is more better
  Reply With Quote
Old 20th May 2005, 10:00 AM   #2
IVX is offline IVX  Russian Federation
diyAudio Member
 
IVX's Avatar
 
Join Date: Jul 2003
Location: Everywhere (Buddhist's context)
see lm319 datasheet , pin#3(8) are GND, from the out== pin#7(12) resistor 1Kohm to 5v.
__________________
Best regards,
E1.
  Reply With Quote

Reply


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
Problems with LM319 Baldin Class D 16 7th November 2006 06:49 PM
Help on using LM319 in Single Supply Configuration Workhorse Class D 4 13th December 2004 12:46 PM
comparator audio-kraut Solid State 8 15th November 2004 06:44 AM
Need comparator recommendation Charles Hansen Parts 2 12th July 2004 05:24 PM


New To Site? Need Help?

All times are GMT. The time now is 04:21 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2