Re: A noisy pilot light !
¿ªÔÆÌåÓýThanks Dale I ?understand the need for a resistor, but on the link you sent? I didn¡¯t see? that resistors were included inside these bayonets. ?my eyes are tired , ?and i am trying a new computer and screen so I could have missed that. Don ?VA3DRL ? From: [email protected] [mailto:[email protected]] On Behalf Of Dale Parfitt
Sent: Saturday, October 1, 2022 9:36 PM To: [email protected] Subject: Re: [HallicraftersRadios] A noisy pilot light ! ? In parallel. The forward voltage gap? on? LED¡¯s is a function? of their intrinsic doping. Red is around 2V and white around 3.5V (from memory). If there is not a current limiting resistor then the LED goes poof. Current? bright LED¡¯s typically run at 20mA forward current. ? Dale W4OP ? From: [email protected] [mailto:[email protected]] On Behalf Of don Root ? Ahhh, thanks Dale. ?I see the bayonet and that you can get ?Warm 2700K bulbs, but I did not see where it said about an internal current limiting resistor, and maybe a diode? I will have to look again. That solves a good part of my question. So do you leave them running as a parallel set,? or change them to run in series? Don VA3DRL ? From: [email protected] [mailto:[email protected]] On Behalf Of Dale Parfitt ? These are a single LED with a? current limiting resistor, built into a Bayonet socket: ? Dale W4OP ? From: [email protected] [mailto:[email protected]] On Behalf Of don Root ? I keep wondering out of ignorance,? when we say ¡°LED¡± do we the just one bare-bones LED device, or do we mean? a LED with some power conditioning electronics built-in as well ?,, perhaps using HF switching devices? Don VALDRL? ?again ? From: [email protected] [mailto:[email protected]] On Behalf Of Randy.AB9GO ? I have LED replacements in my Drake 2B and they are RF quiet.?? ? _========trimmed again_,_ ? |
don Root