Search found 10 matches

by Kevin Fitz-Gerald
Wed Mar 09, 2005 1:33 pm
Forum: General Discussion
Topic: Motor Reverse Protection
Replies: 8
Views: 1986

Re: Motor Reverse Protection

Sofaspud,<p>OK, now I get it. I found this in a package; Diodes Inc. DF01M. So, the price I pay for eliminating the switch is the loss of 1.1v. The package is small enough and the price is right. This may be doable.<p>Dean,<p>The only Schottky bridge I could find was in a huge package; 1.25" x 2.05"...
by Kevin Fitz-Gerald
Wed Mar 09, 2005 4:52 am
Forum: General Discussion
Topic: Motor Reverse Protection
Replies: 8
Views: 1986

Re: Motor Reverse Protection

OK, now this is interesting, Dean. The motor is in a remotely operated device. There are two brands of receivers on the market that will activate the device. Both receivers output about 6 vdc, but opposite polarities. I was going to use a SPDT switch to select the appropriate receiver, but just in c...
by Kevin Fitz-Gerald
Mon Mar 07, 2005 5:23 pm
Forum: General Discussion
Topic: Source for "bump-resistant" SPDT switch?
Replies: 10
Views: 2026

Re: Source for "bump-resistant" SPDT switch?

I have gone with the 95B008.
by Kevin Fitz-Gerald
Mon Mar 07, 2005 2:30 pm
Forum: General Discussion
Topic: Looking for serial A/B switchbox with db9 connectors
Replies: 2
Views: 1006

Re: Looking for serial A/B switchbox with db9 connectors

Thank you Chris! The Nerds have one.<p>-Kevin
by Kevin Fitz-Gerald
Mon Mar 07, 2005 2:13 pm
Forum: General Discussion
Topic: Source for "bump-resistant" SPDT switch?
Replies: 10
Views: 2026

Re: Source for "bump-resistant" SPDT switch?

Thank you everyone. I think I have found some that may work at:
http://www.alltronics.com/switches.htm
by Kevin Fitz-Gerald
Mon Mar 07, 2005 6:36 am
Forum: General Discussion
Topic: Source for "bump-resistant" SPDT switch?
Replies: 10
Views: 2026

Re: Source for "bump-resistant" SPDT switch?

Wait a minute, I think that should be DPDT. It should have 6 terminals.
by Kevin Fitz-Gerald
Mon Mar 07, 2005 6:33 am
Forum: General Discussion
Topic: Source for "bump-resistant" SPDT switch?
Replies: 10
Views: 2026

Source for "bump-resistant" SPDT switch?

I am looking for a "bump-resistant" SPDT switch. This will be mounted externally on a piece of equipment, and I want something low-profile that would be difficult to bump into the other position. I am thinking of a switch that could be changed with maybe the tip of a car key, pen, etc. Any leads wou...
by Kevin Fitz-Gerald
Mon Mar 07, 2005 6:30 am
Forum: General Discussion
Topic: Looking for serial A/B switchbox with db9 connectors
Replies: 2
Views: 1006

Looking for serial A/B switchbox with db9 connectors

I am looking for a serial A/B switchbox with db9 connectors. Anybody have any ideas where I could find one?
by Kevin Fitz-Gerald
Mon Mar 07, 2005 6:28 am
Forum: General Discussion
Topic: Motor Reverse Protection
Replies: 8
Views: 1986

Re: Motor Reverse Protection

Thank you JR. I will give it a try.
by Kevin Fitz-Gerald
Mon Mar 07, 2005 5:39 am
Forum: General Discussion
Topic: Motor Reverse Protection
Replies: 8
Views: 1986

Motor Reverse Protection

I want to keep a small dc motor from rotating the wrong way if somebody connects the voltage source backwards. Motor specs: 5V, drawing 600mA at stall (free running at 52mA). I want to keep it simple and cheap; I was thinking a diode would do the trick, but my military electronics training is but a ...