if you go to radio shack and buy just any 8 ohm resistor say 1watt. it will not work. if you buy an 8 ohm 50 watt resistor from one of the places online that sells them, it will work in the circuit like a regular bulb. this is concerning flash rate ONLY. He says 120V AC outlet across a 475 ohm resistor will provide about 30 watts of heat, so the 25 watt resistor is a little undersized. If you put the 2 resistors in series (not parallel)), you will only generate 15 watts of heat because you increase resistance. It just depends on how cold it gets whether or not that is sufficient. 25/50/100W Watt Shell Power Aluminum Housed Case Wirewound Resistor .01-5k Ohm. C $1.26. 22 sold ðŸ”¥25 X 2.2 Ohm Carbon Film Resistors 1/4 .25 Watt 2.2 Bypass simulate SRS Airbag. C $6.70. 11 sold. ... Resistor, 25 Ohm 5 Watt Wire Wound Power (NOS, New Old Stock)(QTY 5 ea)F34. C $6.09We would like to show you a description here but the site won't allow us.Jul 21, 2017 Â· a 120 ohm resistor a 60 ohm resistor and a 40 ohm resistor are connected in parallel a 2.2 k resistor dissipates 0.5 w. the current is a 30uf capacitor is charged to 40v sourcingmap 50W 25 Ohm 5% Aluminum Housing Resistor Screw Tap Chassis Mounted Aluminum Case Wirewound Resistor Load Resistors Green 2 pcs 5.0 out of 5 stars 2 Â£7.75 Â£ 7 . 75 (Â£3.88/Item) 50 Ohms 100 W Resistors are available at Mouser Electronics. Mouser offers inventory, pricing, & datasheets for 50 Ohms 100 W Resistors. sourcingmap 50W 25 Ohm 5% Aluminum Housing Resistor Screw Tap Chassis Mounted Aluminum Case Wirewound Resistor Load Resistors Green 2 pcs 5.0 out of 5 stars 2 Â£7.75 Â£ 7 . 75 (Â£3.88/Item)1,322 results for .25 ohm resistor ... 24pcs 2k Ohm, Resistor .25 Watt, 5% Carbon Composition ... KYOCERA Thick Film Chip Resistor 806 Ohm 1% 100ppm .25W 1206 SMD NEW ... Home Defense. 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Huge Ohmite Bracket Mount Resistors Inventory - Same Day Shipping - Expert Technical Support Spoke to a very good support person at Ring and found the Ring document indicating that if you are hard wiring the Ring VDB 2 without a mechanical or digital doorbell already installed at your house, you needed to solder in a 25 ohm, 50 watt wire wound resistor into the circuit. The document gave links to suppliers of the resistor.16V 30VA Doorbell Transformer with 50 W 25 Ohm Resistor for Doorbell Compatible with All Versions of Ring Doorbell, Nest Hello August Eufy Doorbell 4.3 out of 5 stars 35 $17.99 $ 17 . 99That gives 50 ohms of impedance, and with 2-watt resistors, that should dissipate 40 watts - close enough to 50. My plan was to build it into a small (one quart, or about a liter) paint can. I wanted to suspend the resistors between two copper plates for low parasitic capacitance and good power dissipation, so I ordered up some 24-AWG copper ... 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Well, the subject says it all. Let's assume that I have the equipment to measure a 0.1 ohm resistance fairly accurately. I am thinking of maybe rolling it to distribute the heat and the cutting a piece that gives me as close to 0.1 ohm as I can get.