Search found 218 matches
- Mon Feb 05, 2007 1:13 pm
- Forum: General Discussion
- Topic: Typical RS customer service
- Replies: 19
- Views: 9535
Mr Al, I remember Lafayette Radio well, infact I still have some akro-mills parts cabinets that I purchased from the warehouse store on Long Island back in the 60's. In the early 70's I was stationed on the Alaskian island of Attu, had a FPO(fleet post office address0 and I used to mail order from t...
- Thu Feb 01, 2007 11:33 am
- Forum: General Discussion
- Topic: latching relay or not??
- Replies: 7
- Views: 4470
I just remembered that I have made latching relays out of normal DPDT relays. First you get a relay of 1/2 the voltage you are working with. put a resistor in series with the coil, the resistance is the same as the relay coil resistance. Then you get two normally open (NO) push buttons. Wire the con...
- Mon Jan 29, 2007 7:34 pm
- Forum: General Discussion
- Topic: A Difficult Circuit !
- Replies: 12
- Views: 5158
- Sun Jan 28, 2007 3:24 pm
- Forum: General Discussion
- Topic: latching relay or not??
- Replies: 7
- Views: 4470
I have seen and used 3 types of latching relays. The first kind is a mechanical latching with an impulse coil. One impulse on the coil latches it and the next impulse unlatches it. The second type uses a magnet for latching. A dc voltaqe of one polarity applied to the coil latches it. Applying the d...
- Tue Dec 12, 2006 8:13 am
- Forum: General Discussion
- Topic: Blinking leds
- Replies: 7
- Views: 4699
- Mon Dec 11, 2006 5:37 am
- Forum: General Discussion
- Topic: Electric water heater questions
- Replies: 22
- Views: 14213
Another solution that I don't think has been addressed is restrict the flow of water to the shower head. I have done this and I never run out of hot water with a gas water heater. Even in a travel trailer the water heater is small(something like 6 gallon). Once the water is hot and with the proper s...
- Thu Nov 02, 2006 3:30 pm
- Forum: General Discussion
- Topic: coloidial silver ??
- Replies: 14
- Views: 8483
The circuit for my coloidial silver generator is a LM7805 set of as a constant current source with a 270 resistor. In series with the output is a LED. When power is first applied with the electrodes in the 1 cup of distilled water the LED is out as no current flows. Adding a few grains of salt the L...
- Thu Nov 02, 2006 3:22 pm
- Forum: General Discussion
- Topic: TENS Units
- Replies: 6
- Views: 3712
I agree that a tens unit may heal the pain, but I have seen them help with the endurance of pain. I have built a number of experimental units. The reason the commercial ones are expensive is that they require FDA approval to be on the market. But a doctors prescription to a durable medical supply ho...
- Wed Nov 01, 2006 10:45 am
- Forum: General Discussion
- Topic: coloidial silver ??
- Replies: 14
- Views: 8483
- Wed Sep 20, 2006 7:54 am
- Forum: General Discussion
- Topic: LED Tea Light Candle
- Replies: 13
- Views: 10730
Get two flashing LED's of the same color. Connect them in parallel, wire them in series with a orange LED and a 9V battery. It will last for days. When the power is first turned on the orange LED flashes normally, but in a short time the two flashing LED's get out of sync with each other and the ora...
- Fri Aug 11, 2006 6:42 am
- Forum: General Discussion
- Topic: Natural Gas Refrigeration
- Replies: 10
- Views: 4811
I do not know what the refridgerante(sic) for the RV's, but they use heat from a propane burner or a AC heater when switched to AC power to do the cooling. I have a 2006 travel trailer that the refridgerator works extremely well. It has a small freezer, about 1.5 cu/ft. It will freeze ice cubes in a...
- Tue Jul 11, 2006 6:56 am
- Forum: General Discussion
- Topic: looking for someone who has magazines HAM RADIO or 73 magazi
- Replies: 7
- Views: 4487
I think the circuit you are looking for was called an octopus.
Here is a link to one I found on google.
http://octopus.freeyellow.com/octopus.html
P.S. You will probably have copy and paste it.
Here is a link to one I found on google.
http://octopus.freeyellow.com/octopus.html
P.S. You will probably have copy and paste it.
- Fri Jul 07, 2006 6:21 am
- Forum: General Discussion
- Topic: another capacitor question???
- Replies: 50
- Views: 22434
Going a little bit farther, motor start capacitors are generally high values around 300uF, and are generally switched out of the circuit once the motor is turning. There are motor run capacitors are also used and are generally about 7uF in value and are always in the circuit. The do the same provide...
- Wed Jul 05, 2006 5:37 pm
- Forum: General Discussion
- Topic: capacitors???
- Replies: 6
- Views: 3525
caps(short for capacitors) or in the old days when I started out in electronics they were called condensers. In simple terms a capacitor opposes any change in voltage. It does that by charging to the new level when the voltage in the circuit tries to rise. It discharges when the voltage in the circu...
- Sat Jul 01, 2006 5:42 pm
- Forum: General Discussion
- Topic: Ideas for battery powered heater wanted.
- Replies: 28
- Views: 12674