7 Jan
2019
7 Jan
'19
9:28 a.m.
Thanks George, I tried it with and without the resistor and couldn't see any difference with the LEDs so wondered if it was just put in to increase the life of the bulb. I'll leave them in and see how we go.
The controllers now look like this adding a splash of colour to the shack. http://www.ukdx.org.uk/tv/rotator/400s.jpg
Paul Sussex Coast. JO00
On 06/01/2019 22:33, W3AB/GEO wrote:
Paul,
It appears that one unit uses 28V to light the bulb & the other uses 14V. If the mod is for the unit that is 14V, leave the resistor in the circuit.
Sent from my two way wrist watch 73 de W3AB/GEO On Jan 6, 2019, at 03:26, Paul <[email protected] mailto:[email protected]> wrote:
As both my KR400 controllers have blown bulbs I've modified them to use LEDs as per https://bit.ly/2TzeHud There is however a small difference that I'd like an opinion on as I'm not very electronically minded. Eddie modified his KR-400RC however on my KR-400 controllers there is an additional 100R between the transformer and bulb. What is its purpose and should I leave it in or remove it when adding the diode, limiting resistor and LEDs shown in the mod? CCT grabs showing the difference https://bit.ly/2FbKIo5 Paul Sussex Coast. JO00