Tamiya electronics and voltage

If you have a tank query and you can't find the answer anywhere else, post here. (TIP - Check for answers in FAQ, use the 'search' facility or even check this board before posting here).
Forum rules
If your question is electronics related please post it in one of the relevant boards here: viewforum.php?f=31
User avatar
tomhugill
Captain
Posts: 4885
Joined: Thu Apr 15, 2010 11:21 am

Re: Tamiya electronics and voltage

Post by tomhugill »

jtracks wrote:
Jay-Em wrote:You could use a servo Y-lead or splitter-lead on any channel, and use one the male plug as a power-source. LED's use 20mah at worst, so the receiver won't even notice the added drain. It is still advisable to wire a 100-ohm resistor in-line with the "-" lead of the LED. I use that trick to light-up my RC-Crawlers.
Good idea but wouldn't the voltage to the light be the same as the receiver is putting out? That may be 6 volts?????
Use a resistor?
jtracks
Warrant Officer 2nd Class
Posts: 1209
Joined: Wed Sep 17, 2014 4:00 pm
Location: Roseville, CA.

Re: Tamiya electronics and voltage

Post by jtracks »

tomhugill wrote:
jtracks wrote:
Jay-Em wrote:You could use a servo Y-lead or splitter-lead on any channel, and use one the male plug as a power-source. LED's use 20mah at worst, so the receiver won't even notice the added drain. It is still advisable to wire a 100-ohm resistor in-line with the "-" lead of the LED. I use that trick to light-up my RC-Crawlers.
Good idea but wouldn't the voltage to the light be the same as the receiver is putting out? That may be 6 volts?????
Use a resistor?
OK, will I need one on both legs of the LED Tom?
Joe
Jay-Em
Corporal
Posts: 292
Joined: Sun Jul 17, 2011 9:11 pm
Location: The Chilly and Flat part of the Netherlands' North.

Re: Tamiya electronics and voltage

Post by Jay-Em »

One leg. Mostly the " - " ( the short leg)

If You are unsure, check if You got 5v LED's or 3v LED's.

The RXputs out something like 5.4 v, so, in case of a 3v LED, You could wire two of them in series. With a 100 ohm resistor on each LED, they should last along while.

With a 5v LED (often the super-bright kind) just wire them in parallel with a resistor on each LED. It's the way cheap LED light-sets for cars are wired.
Post Reply

Return to “General Questions”