Search found 18 matches

by mikeu
Wed Nov 11, 2009 5:12 am
Forum: Computer Programming
Topic: LCD monitor on old PS1 computer
Replies: 1
Views: 636

LCD monitor on old PS1 computer

Hi, I have a friend who has an old IBM PS1 computer he uses for high speed morse code. He wondered if it's possible to replace the existing video monitor with an lcd monitor to save space. He doesn't want to change the computer. I don't think this is possible but I thought I would throw it to the fo...
by mikeu
Mon Nov 09, 2009 4:30 am
Forum: General Discussion
Topic: Dish Network VIP211 Remote Control Extender
Replies: 3
Views: 1064

Re: Dish Network VIP211 Remote Control Extender

Hi, Just wanted to get back to the folks on the forum. I finally got all the parts to build the Mark 5 ir range extender shown here. http://www.zen22142.zen.co.uk/Circuits/Interface/irext5.htm Thanks to the person that recommended the Mouser part for the IR phototransistor. I've been using the circu...
by mikeu
Mon Sep 21, 2009 8:50 am
Forum: General Discussion
Topic: Dish Network VIP211 Remote Control Extender
Replies: 3
Views: 1064

Dish Network VIP211 Remote Control Extender

Hi, I want to build a circuit that would enable me to control my Dish Network VIP211 from another room. The remote is infrared only. I've done an internet search for circuits and one called the "Mark 5" looks like it might do the trick. I can't find a U.S. source for the photodiode which is a Siemen...
by mikeu
Thu Apr 23, 2009 9:00 am
Forum: General Discussion
Topic: Part ID needed for LCD TV Inverter board component
Replies: 4
Views: 729

Re: Part ID needed for LCD TV Inverter board component

Hi again, An update on my component problem. I was able to identify the parts as AOD454 and AOD413. These are n channel and p channel mosfets made by AOS (Alpha and Omega Semiconductor). Digikey stocks only one of the complimentary pair. Anyone know of good subs before I start downloading data sheet...
by mikeu
Thu Apr 23, 2009 4:48 am
Forum: General Discussion
Topic: Part ID needed for LCD TV Inverter board component
Replies: 4
Views: 729

Part ID needed for LCD TV Inverter board component

Hi, I'm working on a Toshiba 42HL196 LCD TV. The backlight is out. There are two inverter boards - a master and slave, one on each side of the set. The boards are made by CMO and are part numbers VIT70023.50 and VIT70023.51. I have found replacement boards but where is the fun in that! I'd like to r...
by mikeu
Mon Mar 16, 2009 8:19 am
Forum: General Discussion
Topic: Sharp Microwave LCD Backlight problem
Replies: 3
Views: 829

Sharp Microwave LCD Backlight problem

Hi, A friend has a Sharp Microwave Model R-314FS, manufactured in July 2002. The led backlight is out for the LCD display. All three surface mount leds are good - no power to them. The controller board has a limited number of parts (other than the processor board) for the power supply. We have no sc...
by mikeu
Wed Dec 03, 2008 3:37 pm
Forum: General Discussion
Topic: K type thermocouple circuit
Replies: 4
Views: 956

Hi,

Thanks for all the info.
I found the Analog Device chip after I posted the request.
As it turns out, the thermocouple can't respond fast enough to the event I'm trying to capture.

Mike
by mikeu
Wed Dec 03, 2008 10:47 am
Forum: General Discussion
Topic: K type thermocouple circuit
Replies: 4
Views: 956

K type thermocouple circuit

Hi,

Does anyone have a circuit or a link to a circuit that raises a K type thermocouple to a voltage suitable for a data acquisition card?
The input ADC has a range of +/- 10 Volts.
Thanks,

Mike
by mikeu
Fri May 04, 2007 3:00 pm
Forum: General Discussion
Topic: electrically conductive epoxy
Replies: 14
Views: 2762

Zotdoc,

You can purchase electric match heads, nichrome wire already soldered in place from two sources.

www.oda-ent.com

or

www.skylighter.com

Note: You will still have to dip them in a composition.
by mikeu
Tue Mar 06, 2007 9:39 am
Forum: Computer Programming
Topic: DTMF with VB6
Replies: 1
Views: 1798

DTMF with VB6

Hello,

Is there a way to generate telephone touch tones with VB6?
Do I need a separate Active X or dll? If I need one, does anyone know of
a shareware version?

Thanks
by mikeu
Fri Dec 08, 2006 11:53 am
Forum: General Discussion
Topic: Duplicating routed board in Eagle
Replies: 5
Views: 1641

Duplicating routed board in Eagle

Hello, Can someone tell me how to duplicate a two layer routed board in Eagle? I have the shareware version of Eagle and my pcb is much smaller than the size limit. I would like to copy the routed board and place it next to the first one. In other words have several duplicate boards inside the allot...
by mikeu
Thu Dec 08, 2005 12:14 pm
Forum: General Discussion
Topic: "Thunder Thrower" service information needed!
Replies: 0
Views: 761

"Thunder Thrower" service information needed!

Hello,

I am trying to find complete service information for a BSR MCD 8090 Thunder Thrower. This is a receiver/cd player that was sold through DAK.
Thanks
by mikeu
Thu Aug 04, 2005 5:34 am
Forum: General Discussion
Topic: Auto Trouble Code Reader Circuit
Replies: 10
Views: 2245

Re: Auto Trouble Code Reader Circuit

Hello All,<p>Thanks to everyone that replied. I took the easy way out and used an led, limiting resistor and switch. I was able to get the codes - now I just have to fix the truck!<p>Mike
by mikeu
Sun Jul 31, 2005 6:26 pm
Forum: General Discussion
Topic: Auto Trouble Code Reader Circuit
Replies: 10
Views: 2245

Auto Trouble Code Reader Circuit

Hi,<p>I've got a 1987 Ford Ranger truck (OBD 1) that I need to read the engine trouble codes. The manual says that you can use an analog meter and count the meter deflections to obtain the numeric code. Does anyone have a more elegant circuit solution or can point me to a website for building my own...
by mikeu
Thu Jun 30, 2005 4:30 am
Forum: General Discussion
Topic: phone line driver ic
Replies: 8
Views: 1949

Re: phone line driver ic

Hi Dale and others,<p>I'm using a Holtek HT-9170B for the DTMF decoder. Very inexpensive and a very close replacement to the California Micro CM8870.
Thanks everyone for all the suggestions. Now, anyone have a favorite single supply op amp?<p>Mike