Search found 109 matches

by Timothy Rasch
Sun Oct 26, 2008 8:55 pm
Forum: General Discussion
Topic: can't access nutsvolts online user id,password won't work
Replies: 13
Views: 2207

can't access nutsvolts online user id,password won't work

Hi ,how do I verify if my user id [name] and password are correct on Nuts/Volts?. It only works in this forum for some reason.It doesn't seem to work at all for the downloads. I also put the Id number from the magazine label and the password and that doesn't work either. Help!!! please!!! would be a...
by Timothy Rasch
Thu Jun 05, 2008 8:17 pm
Forum: General Discussion
Topic: Public Library is blocking downloads of electronics catalogs
Replies: 10
Views: 2848

Public Library is blocking downloads of electronics catalogs

:mad: The Public Library [Brown County Library] in Green Bay ,Wisconsin is blocking [filtering ] all my electronic catalog downloads: Newark, Mouser,Allied,Vanco Electronics. These catalogs downloaded just fine in February. They call these Public Librarys????!!!!! What a bunch of SH*T!!!! just for t...
by Timothy Rasch
Wed Jan 24, 2007 4:19 pm
Forum: General Discussion
Topic: Phase shift oscillator equations way different in other book
Replies: 3
Views: 1139

Mr Al,I can't send the circuit from protolab or spice program .I will try to describe the network : it's a three resistor network with 10k in series and three caps .1uf going to ground from each resistor node and a output resistor from the resistor string ,10k going to -input of ua741. there is a ad...
by Timothy Rasch
Wed Jan 24, 2007 3:10 pm
Forum: General Discussion
Topic: Phase shift oscillator equations way different in other book
Replies: 3
Views: 1139

Phase shift oscillator equations way different in other book

Hi I am a electronics technician that came across equation confusion from various books for the three network phase shift oscillator circuit.One book"hints and kinks by QST"says f=(tan 60 deg)/2prc=1.73/6,28 rc= 0.28/rc. Another book "electricity,electronics and electromagnetic principles" by Robert...
by Timothy Rasch
Wed Jan 24, 2007 2:04 pm
Forum: General Discussion
Topic: Nuts & Volts and CQ Magazine did not receive February ye
Replies: 5
Views: 1384

Nuts & Volts and CQ Magazine did not receive February ye

I didn't receive the Nuts & Volts or the CQ Magazines for February yet. It's January 24 today. Did anyone receive these magazines ?
Tim Rasch [email protected]
by Timothy Rasch
Tue Jan 23, 2007 10:03 pm
Forum: General Discussion
Topic: My f#^$%k$*#(##@(*&&@#$#$ DVD player keeps skipping
Replies: 12
Views: 2981

dvd player skipping

Hi , a Friend of mine that works on dvds says the motor that spins the dvd has a high failure rate which can cause startup ,playing problems. Matt Electronics sells the motor for about $7.00 plus shipping. I don't think the laser head being about a year old is the problem unless you damaged the coil...
by Timothy Rasch
Mon Dec 25, 2006 11:36 am
Forum: General Discussion
Topic: Electronics World ceased publication?
Replies: 4
Views: 1475

Electronics World

I guess the supplier dropped the magazine to the newstand. It was expensive to buy [almost $9.00 each w/o tax]
Tim Rasch [email protected]
by Timothy Rasch
Sun Dec 17, 2006 2:41 pm
Forum: General Discussion
Topic: Electronics World ceased publication?
Replies: 4
Views: 1475

Electronics World ceased publication?

Hi ,I am a Nuts/Volts subscriber and I also bought Electronics World on the newstand for $9/issue in Green Bay,Wisconsin. I am still waiting for the Electronics World October issue !!!! I went to Electronics World favorites list today and it says "page can't be found" so I assume their out of busine...
by Timothy Rasch
Sat Oct 14, 2006 6:47 pm
Forum: General Discussion
Topic: LED'S USED AS RECTIFIER DIODES.....
Replies: 44
Views: 8343

leds as rectifiers

Hi, I have seen in GE portable mixers the charging circuit used the red led as rectifier in series with a resistor [vaguely remember value 180ohms or lower and a zener in series with it so it would stop charging when the battery was full.]. The leds can be used in a bridge as a LOW current rectifier...
by Timothy Rasch
Sat Oct 14, 2006 6:14 pm
Forum: General Discussion
Topic: Student needs help for high school science teacher
Replies: 11
Views: 2282

student needs help on project

Hi again , I made a mistake with the switch, it is a single pole double throw momentary. Here are the connections [1pph from the 12th decade counter] goes to the top terminal ,the pole [center terminal goes to the 74c925 clock input],the bottom terminal goes to the 6th decade counter output [1pps]. ...
by Timothy Rasch
Sat Oct 14, 2006 5:37 pm
Forum: General Discussion
Topic: Student needs help for high school science teacher
Replies: 11
Views: 2282

student needs help for project

Hi again I found out the National mm74c925n[4 digit] has the buffer transistors built in for the segments so it's easier to use,the counter is up counting only.The other bad new is the ic works up to 6v supply. For the time base you can divide the 60 hz /3600 = 1 count per hour [that's two divide by...
by Timothy Rasch
Fri Oct 13, 2006 10:39 pm
Forum: General Discussion
Topic: Student needs help for high school science teacher
Replies: 11
Views: 2282

school project help

Hi ,I am a consumer electronics technician[30 years of experience] that is out of work for 10 months.[the Boss retired] I suggest you look at Motorola mc14553 =NTE4553b datasheets [use Google search type in mc14553b datasheets]. They were taken over by ON Semiconductor. This is a 3 digit c-mos up co...
by Timothy Rasch
Fri Oct 13, 2006 3:07 pm
Forum: General Discussion
Topic: Eton/Grundig S350 service manual or just schematic needed
Replies: 7
Views: 2576

Eton/Grundig S350 service manual or just schematic needed

Hi, I found I can't order the Service manual from Radio Shack for Eton/Grundig S350. The problem is drifting on the am,sw bands especially the high frequency bands . I don't want to spend big money on this CHEEP radio [sold for $99.95]. Could anyone please send Me the service manual or the schematic...
by Timothy Rasch
Fri Oct 13, 2006 2:34 pm
Forum: General Discussion
Topic: October Issue
Replies: 17
Views: 5121

October Nuts volts

Hi Again ,it's October 13 and I didn't get my October issue yet. Hope it comes Saturday. If it don't arrive , I have one reserved at the newsstand. It's just the matter of going to the newstand which is about 10 miles away. To the other Guy wondering, I suggest He wait a couple more days or more and...
by Timothy Rasch
Fri Oct 13, 2006 1:58 pm
Forum: General Discussion
Topic: Radio Shack fires person with experience in Electronics
Replies: 23
Views: 6766

Radio Shack fired experienced employee

Hi, I don't agree with DRWHen. I am offended,the guy is a real nice person. He went through the kit building era like I did [in the mid 1960's]. I did some kitbuilding too ,with a difference ;I built a lot of circuits on perfboard from the schematics ,I still do today when the computer simulations D...