UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Old Drydex Torch with Replica No 8 Battery and LED.

ThePillenwerfer · 4th Jun 2019, 2:53 pm

No resistor. Those LEDs should have 3.4V so even with fresh alkaline cells it's below that. The rated current is 150mA but even at a fifth of that it gives well over half the light it would at full power; it's certainly as bright as a tungsten lamp would be.

4th Jun 2019, 2:53 pm	#4
ThePillenwerfer Octode Join Date: Mar 2011 Location: Sheffield, South Yorkshire, UK. Posts: 1,453	Re: Old Drydex Torch with Replica No 8 Battery and LED. No resistor. Those LEDs should have 3.4V so even with fresh alkaline cells it's below that. The rated current is 150mA but even at a fifth of that it gives well over half the light it would at full power; it's certainly as bright as a tungsten lamp would be. __________________ "Experts are only good at one thing: explaining why something will not work!"