Search found 40 matches

by dave8976
Sat Aug 16, 2003 5:39 pm
Forum: General Discussion
Topic: Functional Generator Question
Replies: 9
Views: 5605

Functional Generator Question

Has anyone ever thought of building a functional generator that produces sinewave, squarewave & triangle wave signals over a range of 1Hz to 20kHz or hgiher. I came across one design using the MAX038 (Maxim)chip. This chip also provide a TTL signal which make it easy to add an 8 digit frequency mete...
by dave8976
Mon Aug 11, 2003 4:29 pm
Forum: General Discussion
Topic: *** Need Help Choosing a Tektronix Scope ***
Replies: 26
Views: 7110

Re: *** Need Help Choosing a Tektronix Scope ***

Dean, your are absolutely right and I certianly respect your opinion. I must say I would love to have purchased a Tektronix unit but instead picked a cheaper alternative and for my purchase suits me satisfactory for the frequency of use. If quality, reliability and vendor support is a concern certai...
by dave8976
Sun Aug 10, 2003 6:33 pm
Forum: General Discussion
Topic: *** Need Help Choosing a Tektronix Scope ***
Replies: 26
Views: 7110

Re: *** Need Help Choosing a Tektronix Scope ***

Fred, there was a goood article in Nuts & Volts about the Oszifox scope model. The disadvantage is teh built in screen is too small and you need to rely on having it connected to a PC in order to do any serious viewing of the signal. In my case I purchased their other product called the Multiscope a...
by dave8976
Sun Aug 10, 2003 6:15 pm
Forum: General Discussion
Topic: *** Need Help Choosing a Tektronix Scope ***
Replies: 26
Views: 7110

Re: *** Need Help Choosing a Tektronix Scope ***

Fred, the Protek scope come swith a 1 year warranty. The manual is good. It is a typical analogue scope. Comes with 2 probes. I also thought of the Tektronix scope but pricing is too high for my use. Dave
by dave8976
Sat Aug 09, 2003 2:00 pm
Forum: General Discussion
Topic: *** Need Help Choosing a Tektronix Scope ***
Replies: 26
Views: 7110

Re: *** Need Help Choosing a Tektronix Scope ***

Fred, ealier in the year I purchased a Protek 40Mhz scope from Circuit Specialist. I have found the scope to work well and really good value for the price at $319. Circuit Specialist generally advertize on the back 2 pages of Nuts & Volts. I found them to be very good and fast based on placing an in...
by dave8976
Sat Aug 02, 2003 6:02 pm
Forum: General Discussion
Topic: Electronics Simulation Software
Replies: 21
Views: 8076

Re: Electronics Simulation Software

Just to let everyone know I ended up buying the B2Spice A/D version 4 product from Beigebag. I have been impressed with their speed of response to my questiopns as well as the delivery of the product once I ordered it over the internet. Although I am still learning to use the product their documenta...
by dave8976
Fri Aug 01, 2003 8:15 pm
Forum: General Discussion
Topic: Telephone Ring Indicator
Replies: 5
Views: 2080

Re: Telephone Ring Indicator

Here is a useful site http://www.ee.washington.edu/circuit_archive/circuits/F_ASCII_Schem_Tel.html#ASCIISCHEMTEL_002 that shows a simple LED indicator circuit for a ringing line. There are several circuits on this page. Another idea, that I have not tried. Since hte ringing signal is approx 84v 20 h...
by dave8976
Wed Jun 25, 2003 9:46 am
Forum: General Discussion
Topic: Electronics Simulation Software
Replies: 21
Views: 8076

Re: Electronics Simulation Software

I came across a very good web site listing all of the available circuit spice tools along with a brief assessment.
http://homepages.which.net/~paul.hills/ ... Spice.html<p>Dave
by dave8976
Mon Jun 16, 2003 4:33 am
Forum: General Discussion
Topic: 110 Volt indicator light
Replies: 5
Views: 2095

Re: 110 Volt indicator light

I have a similiar situation with my garage lights. I have a set of lights (4) mounted on oposite sides of the inside gargae wall. These lights are operated by two 3 way switches one located inside the gragre near the front garage door and other inside the garage beside the door entrance to the garag...
by dave8976
Mon Jun 16, 2003 4:17 am
Forum: General Discussion
Topic: Electronics Simulation Software
Replies: 21
Views: 8076

Re: Electronics Simulation Software

Al I noticed in your artiles that you adjusted the power supply in example 1 to have 5000 ohms, is this to represent the the resistance of a typical circuit that would be atatched to this filter or is it to repreent an internal resisitance of a power source. Also I noticed that in order to get the a...
by dave8976
Sun Jun 15, 2003 5:31 am
Forum: General Discussion
Topic: Electronics Simulation Software
Replies: 21
Views: 8076

Re: Electronics Simulation Software

Al, I read your article - it is a great one, well worth the read for anyone interested in starting out on using circuit simulation software. I think a great follow up article for N&V would be to cover full range of available software and the functionality that is offered. Provide a more indepth cove...
by dave8976
Fri Jun 13, 2003 6:12 pm
Forum: General Discussion
Topic: Electronics Simulation Software
Replies: 21
Views: 8076

Re: Electronics Simulation Software

Beginer, Yes I do have the manual for Circuit Maker. I downloaded from the site. I will send it to you if you will send me your e-mail address. I found the student version does not work as outlined int he manul under Windows XP but does under Windows 98. But I found the 30 day trial version works we...
by dave8976
Thu Jun 12, 2003 9:33 am
Forum: General Discussion
Topic: Electronics Simulation Software
Replies: 21
Views: 8076

Re: Electronics Simulation Software

I recently came across the B2 Spice A/D and v4 product from a company called Beige Bag Software. Has anyone tried this out. Their pricing appears reasonable. They provide a 30 day trial. the Tend heir web site is www.beigebag.com.N.
by dave8976
Tue Jun 03, 2003 6:54 pm
Forum: General Discussion
Topic: most useful books
Replies: 14
Views: 3935

Re: most useful books

One of the best books I have come across is by Michael Tooley, Electronic Circuits Handbooks Second Edition. This book is filled with theory and a lot of practical applications. It provides you with a good level of understanding of the full range of passive and active components work. Sorry to say t...
by dave8976
Mon May 26, 2003 4:26 am
Forum: General Discussion
Topic: Electronics Simulation Software
Replies: 21
Views: 8076

Re: Electronics Simulation Software

My interest in circuit simulation programs has been rekindle for the past year with the attempt to recreate a number of the circuits that are presented in the various projects and in the TJByers Q&A forum such in Nuts & Volts. In some cases I thought why did I not think of that in terms of the desig...