[NSRCA-discussion] Futaba output voltage

[Bob Richards]

IMHO, the signal output level has nothing to do with resolution or torque. The servo either works or it does not, the torque/resolution does not change with signal amplitude.  The output level is simply the logic level that the system was designed to use. This is one reason that you need to be careful when mixing servos/receivers from different companies.
   
  There is nothing wrong with using a signal booster. The pulse width is not altered, only the amplitude. It may help with long leads, especially with multiple servos. It also provides some isolation.
   
  Bob R.
  

Anthony Romano <anthonyr105 at hotmail.com> wrote:
  Hi Fred,
Am I to imply from your comments below that Futaba receivers output a lower 
than optimal voltage to the servos? If so could I get a benefit from just 
changing receivers?

Anthony


>From: "Fred Huber" 
>Reply-To: NSRCA Mailing List 
>
>Note that using a dual-inverter "glitch buster" 
>http://www.uoguelph.ca/~antoon/gadgets/noiserx.htm (especially with Futabe 
>127 DF RX's) will boost the signal line from the RX output (appx 3.8 v for 
>the Futaba 127 when using 4.8 v NiCd pack) to full RX pack voltage. This 
>can increase effective resolution. (especially with long servo leads)
>The circuit is INTENDED to filter interference from long leads... and it 
>works. The side effect is almost as good as the intended purpose.
>
> If you can find the chip to make the circuit... I'm having trouble 
>finding the DIP (.10 inch pin spacing) I got some .05 in pin spacing 
>chips... which are going to be harder than heck to solder into the circuit, 
>but should do the job.
> ----- Original Message -----
> From: Scott Pavlock
> To: NSRCA Mailing List
> Sent: Wednesday, September 13, 2006 4:59 PM
> Subject: Re: [NSRCA-discussion] berg 7 channel Rx
>
>
> {trimmed}
> The nice part about this is it gives the ability of any analog servo to 
>output twice its normal torque.
> {trimmed}
>
> Scott Pavlock
>
>
> On 9/13/06, White, Chris wrote:
> Hi Mike Mueller,
>
> Oops
I meant to imply "They seem to be okay in low cost electrics"J 
>I'm not ready to try a $50 receiver in a big-buck R/C application either

>
> Chris
>
>
>
>
>----------------------------------------------------------------------------
>
> From: nsrca-discussion-bounces at lists.nsrca.org 
>[mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of mike mueller
> Sent: Wednesday, September 13, 2006 1:44 PM
> To: NSRCA Mailing List
> Subject: Re: [NSRCA-discussion] berg 7 channel Rx
>
>
>
> I know that Castle took a long time to introduce them to the market. 
>The initial designs that they had right after taking over Berg were not up 
>to the standards they wanted. I'm really impressed with these and can't 
>wait to try one. I'll also test them in a small IC plane before having 
>confidence in a pattern plane. The people at Castle are top notch. It's 
>also good to see an electronic component actually made here in the US. Mike
>
> "White, Chris" wrote:
>
> Hi Mike,
> I know some foamie guys are using these and treat them like they are a
> standard.....They should be okay.
> Chris
>
> -----Original Message-----
> From: nsrca-discussion-bounces at lists.nsrca.org
> [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Michael
> Wickizer
> Sent: Wednesday, September 13, 2006 12:24 PM
> To: nsrca-discussion at lists.nsrca.org
> Subject: [NSRCA-discussion] berg 7 channel Rx
>
> Anybody have experience with these receivers? At only 8 grams, sure
> would
> be a weight savings in electric applications.
>
> http://www.castlecreations.com/products/berg_7-channel.html
>
> Mike
>
>
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