Search found 27 matches

by ajc-28
Mon Sep 20, 2004 3:47 am
Forum: General Discussion
Topic: reset
Replies: 4
Views: 788

Re: reset

Correction on the Amperite website. Use www.amperite.com/desktopdefault.aspx
by ajc-28
Mon Sep 20, 2004 3:41 am
Forum: General Discussion
Topic: reset
Replies: 4
Views: 788

Re: reset

The Amperite STB Series time delay relay does exactly that. See their website www.amperite.com. Click on time delay relays, then STB Series.
by ajc-28
Fri Aug 20, 2004 3:39 am
Forum: General Discussion
Topic: DVD Trouble
Replies: 7
Views: 1481

Re: DVD Trouble

DVD player trouble? That's why I buy the cheapest DVD player I can find. I have seen lots of sales in the $30 to $40 range. When your DVD player goes bonkers you throw it away and get a new one. They are not made to be repaired. Would you spend $30.00 on repair parts?
by ajc-28
Mon Aug 02, 2004 4:56 am
Forum: General Discussion
Topic: Newbie Timer Question
Replies: 6
Views: 1188

Re: Newbie Timer Question

Amperite Company (www.amperite.com) manufactures a recycling timer called the HDFA Series. It can be supplied for a 3 second on period and six minute off period. It has a SPDT 10 amp relay contact set. Their number is 201 864 9503.
by ajc-28
Mon Jul 12, 2004 6:28 am
Forum: General Discussion
Topic: Daytime running lights and wig wags
Replies: 4
Views: 1077

Re: Daytime running lights and wig wags

The Amperite Wig-Wag flasher is the DFW Series. The spec sheet is on the internet at www.amperite.com
by ajc-28
Mon Jul 12, 2004 6:25 am
Forum: General Discussion
Topic: Daytime running lights and wig wags
Replies: 4
Views: 1077

Re: Daytime running lights and wig wags

Amperite Company, West New york NJ, 800 752 2329, manufactures a Wig-Wag flasher for vehicles. Check their website www.amperite.com
by ajc-28
Thu Jun 10, 2004 5:58 am
Forum: General Discussion
Topic: Oscilloscope question
Replies: 8
Views: 1443

Re: Oscilloscope question

In order to use an oscilloscope to view the transmitter pulses, you need to make a detector which will consist of a single turn of wire about 1 inch in diameter. One side of the coil is "ground" which you connect the scope ground wire to. The other side of the coil goes to the anode of a germaniam R...
by ajc-28
Tue Apr 27, 2004 6:50 am
Forum: General Discussion
Topic: DC-AC converter
Replies: 31
Views: 5922

Re: DC-AC converter

I'll try to describe the circuit using NPN power transistors. Use a center tapped primary with the center tap connected to + DC supply. Connect the collector of each transistor to the other primary connections, one transistor to one primary wire. Connect the two emitters to the minus supply rail. No...
by ajc-28
Fri Apr 23, 2004 6:16 am
Forum: General Discussion
Topic: DC-AC converter
Replies: 31
Views: 5922

Re: DC-AC converter

You don't need a chip. All you need is two npn or PNP transistors hooked up to the primary of a transformer in a multivibrator configuration so that the circuit oscillates at about 60 Hertz as determined by the selection of the R and C values. The secondary of that transformer would then be AC. I ca...
by ajc-28
Mon Apr 05, 2004 6:51 am
Forum: General Discussion
Topic: Looking for CS209AYN8 chips
Replies: 3
Views: 784

Re: Looking for CS209AYN8 chips

Newark-in-one has stock on the CS209A chip but not in DIP form. Their minimum order is $25.00. The phone number is 1-888-467-0797.
by ajc-28
Mon Apr 05, 2004 4:22 am
Forum: General Discussion
Topic: DVD to VHS
Replies: 5
Views: 981

DVD to VHS

Is it possible to copy a movie on DVD to a VHS tape? Is special equipment required?
by ajc-28
Thu Apr 01, 2004 5:27 am
Forum: General Discussion
Topic: new way to make pcbs. Will it work??
Replies: 8
Views: 1618

Re: new way to make pcbs. Will it work??

If you are able to design a PC layout on a computer then it is very easy to make a PCB from that. What you need to do is print the layout on a translucent paper (one that allows light through). You need good black lines for the copper paths. Then you can buy from Circuit Specialists Inc., Mesa, AZ p...
by ajc-28
Tue Mar 30, 2004 7:22 am
Forum: General Discussion
Topic: new way to make pcbs. Will it work??
Replies: 8
Views: 1618

Re: new way to make pcbs. Will it work??

Are you talking about making the artwork, or making a PCB from an existing artwork?
by ajc-28
Tue Mar 30, 2004 4:20 am
Forum: General Discussion
Topic: Air purification
Replies: 5
Views: 962

Re: Air purification

Air purification can be accomplished by using negative ions. Check the April 2003 issue of Nuts and Volts for a neat construction article.
by ajc-28
Thu Mar 25, 2004 5:14 am
Forum: General Discussion
Topic: no power = tun on
Replies: 3
Views: 763

Re: no power = tun on

Suppose you have a normally closed relay contact with the relay coil operated by the solar panel voltage. When the solar panels are active the relay coil is energized, thus shutting off the fan. When the solar panels go dark the relay returns to its normally closed state, thus turning on the fan.