Fun, Learning, Friendship and Mutual Respect
START  HERE


Unregistered
Go Back   HeliFreak > R/C Helicopters > Night Flying


Night Flying Night Flying Helis Info


Reply
 
Thread Tools Display Modes
Old 11-01-2012, 05:57 PM   #1
ashemo
Registered Users
 

Join Date: Aug 2012
Location: Woodland Park, CO
Default LED's Powered Directly from Receiver - Max Current?

Sorry if this has been asked and answered before, but I was unable to find anything.

I would like to power my LED's via an unused RX channel ((Blade 450), but do not know the current-handling capability.

Also, am I correct in assuming 5VDC on this port?

Thanks in advance.

Andy
ashemo is offline        Reply With Quote
Old 11-04-2012, 02:47 AM   #2
jonny1
Registered Users
 

Join Date: Oct 2010
Location: Norway, Bergen
Default

There is a power bus/Rail in the recivers over the + and - pins for servo output.
Volt out is same as volt in from Bec/regulator/rx battery.
Max amp is hard to tell, but if This is a full receiver it should have no problems handling the power demands of hi performance servos.

The signal out wire on the other hand is another thing.
Since it is just a control signal With pwm i would just use This signal to trigger a circuit for powering the leds.
Hard to tell the Max load on signal wire, but i would guess ttl level With Max load in the low milliamps.
Don't try to run any leds from signal wire.

Hobbycity has a turnigy receiver Controlled switch i belive.

Sent from my iPad using Tapatalk HD
__________________
--------------------------------------------------------------------
Spelling check : OFF
Logo 600 3d - Vbar, T-rex 700N DFC - Vbar, T-Rex 600EFL - Vbar, T-Rex 450 Pro BeastX
Spectrum DX8 With NO PROBLEMS
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
jonny1 is offline        Reply With Quote
Old 11-04-2012, 07:10 AM   #3
ashemo
Registered Users
Thread Starter Thread Starter
 

Join Date: Aug 2012
Location: Woodland Park, CO
Default

Thanks, Jonny1. I knew the signal lead wouldn't be able to power anything directly, but I'm planning to have the lights on any time I'm powered up, so that's no problem.

I'm not sure how much current a ,servo pulls but you're right... it will be more than the load of a few LED's. I should have thought of that myself.

Thanks for the detailed reply.

Andy
ashemo is offline        Reply With Quote
Old 11-04-2012, 07:57 AM   #4
jonny1
Registered Users
 

Join Date: Oct 2010
Location: Norway, Bergen
Default

A normal (not hi intensity) small led is about 0.020a each.
Servo is much more.
I would not worry. Only for shorts in led circuit as it would short out receiver as well.

Sent from my U9200 using Tapatalk 2
__________________
--------------------------------------------------------------------
Spelling check : OFF
Logo 600 3d - Vbar, T-rex 700N DFC - Vbar, T-Rex 600EFL - Vbar, T-Rex 450 Pro BeastX
Spectrum DX8 With NO PROBLEMS
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
jonny1 is offline        Reply With Quote
Reply




Unregistered
Go Back   HeliFreak > R/C Helicopters > Night Flying


Night Flying Night Flying Helis Info

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


Copyright © 2004-2011 - William James - Helifreak.com