Companies like "Polaris" used to sell 12 volt models.
Also All electronic, and dozens of other companies used to sell the 12 volt model.
Other that that Hooking into the main PS and over riding the DC signal is easy.
Search found 3680 matches
- Mon Sep 03, 2007 10:55 pm
- Forum: General Discussion
- Topic: Battery backup for a VCR......
- Replies: 7
- Views: 8481
- Mon Sep 03, 2007 9:29 pm
- Forum: General Discussion
- Topic: Panic button
- Replies: 9
- Views: 11148
We use the same method, the Box and pendant. I change the batteries every six months in the main unit, the pendand battery is good for ten years. We are lucky to have a phone service, but any wireless transmitter can do the next mile long bounce. The Transmitter, pendant, and system has been flawles...
- Mon Sep 03, 2007 8:35 pm
- Forum: General Discussion
- Topic: A little earth ground humor
- Replies: 100
- Views: 212798
If only they would wake up, Alice said Click your heels twice? There are few grumpy old parts jockeys here that will tell you it cant be done? Why, because they cant do it them selves. They peaked in their life long ago, as far as general knowledge years ago, they put on the corporate blinders, and ...
- Mon Sep 03, 2007 8:10 pm
- Forum: General Discussion
- Topic: Power Latching IC
- Replies: 47
- Views: 48657
The Gate Turn Off device back when was a SCR type of device, in reverse. But its main qualitites were that it shut off instead of turn on,... using far more current and voltage. It was a specific device that was meant to handle voltages that were outrageous in the real world, such as a TV deflection...
- Sat Sep 01, 2007 9:37 pm
- Forum: General Discussion
- Topic: fax to email
- Replies: 6
- Views: 7956
- Sat Sep 01, 2007 6:53 pm
- Forum: General Discussion
- Topic: Technical Dictionary
- Replies: 9
- Views: 12736
- Sat Sep 01, 2007 6:44 pm
- Forum: General Discussion
- Topic: Power Latching IC
- Replies: 47
- Views: 48657
Thyristors are the most widely used component in the general industry aside from the Transistor, used for AC when both ways are needed. The SCR is also one of the most widely used items, making gate logic for simple logic a snap. Like the FET, it goes back more than 3 decades now with almost a 99.9%...
- Sat Sep 01, 2007 6:33 pm
- Forum: General Discussion
- Topic: A little earth ground humor
- Replies: 100
- Views: 212798
- Sat Sep 01, 2007 6:15 pm
- Forum: General Discussion
- Topic: need schematic for whelen aircraft strobes
- Replies: 30
- Views: 21646
If you disconnect the gate in the middle, and it still conducts, it’s the TUBE/ assembly. The circuitry feeding the tube may have failed? [or the tube] But, if the center is disconnected, and the TUBE continues to discharge [short out] then it sounds like the tube, unless the feed is in excess of ...
- Sat Sep 01, 2007 6:06 pm
- Forum: General Discussion
- Topic: Technical Dictionary
- Replies: 9
- Views: 12736
- Sat Sep 01, 2007 5:59 pm
- Forum: General Discussion
- Topic: Power Latching IC
- Replies: 47
- Views: 48657
Gate turn off SCRs were used in things like the KV 17/19 TV [Trinatron] and from memory it controlled the Fly back or some such device that controlled a voltage of 1100+ volts or so. I repaired mine in the early 80s with this device. It was as big as a To3, it was huge, and it took a lot of power to...
- Sat Sep 01, 2007 3:28 pm
- Forum: General Discussion
- Topic: Is it me?
- Replies: 15
- Views: 14023
Bodgy, ...in the Eastern US they use more phrases like this, old [New England] ] English and all. To any one who has read it normaly, its just super informal, archaic, quaint, odd ball. I got a lot of my languages from the Australians, India’s Proper Queens English, and the Brits so it tends to be...
- Sat Sep 01, 2007 3:19 pm
- Forum: General Discussion
- Topic: Panic button
- Replies: 9
- Views: 11148
- Sat Sep 01, 2007 8:35 am
- Forum: General Discussion
- Topic: Power Latching IC
- Replies: 47
- Views: 48657
- Fri Aug 31, 2007 10:57 pm
- Forum: General Discussion
- Topic: Power Latching IC
- Replies: 47
- Views: 48657