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Old 09-20-2013, 08:19 AM   #41
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Default Re: TorqueMaster BR Mini Packs the Power!

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Originally Posted by JohnRobHolmes View Post
No, the power is backfed through the red wire to keep the regulator from doing work. 6.1 to 6.3v has tested to be an acceptable range.

Zeners for testing should be here today. Installation is easy, solder it inline.
Cool. Thanks. I'm game for a couple when you've settled on the best option.

J
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Old 09-20-2013, 09:21 AM   #42
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Default Re: TorqueMaster BR Mini Packs the Power!

So just curious. What's the technical background with this brain vs cool-running stuff? I don't recall previous esc discussions involving an esc brain.
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Old 09-25-2013, 09:30 PM   #43
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Default Re: TorqueMaster BR Mini Packs the Power!

Hey John will this part work?

MCC 1N5234B-TP 6.2V 0.5W Zener Diode, DO-35, 25pcs
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Old 09-25-2013, 10:07 PM   #44
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Default Re: TorqueMaster BR Mini Packs the Power!

Looks like a good part. I'll post up in the morning on the ones I used with the same basic specs. It was outputting 6.4 onto the rx wires and net heat was lower with the Zener installed. The bec can't be programmed with the Zener in the way.


The cool running mod is because some people want the highest performance possible, and it is an easy hack to do.
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Old 09-26-2013, 09:25 AM   #45
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Default Re: TorqueMaster BR Mini Packs the Power!

Just a question John, Do I need an external BEC as in this thread? Or are the onboard BECs a good enough replacement.

Cheers eh,

Todd
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Old 09-26-2013, 10:53 AM   #46
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Default Re: TorqueMaster BR Mini Packs the Power!

Yes you do need one.


We have had positive results with the zener diode 568-5916-1-nd from Digikey. Just a run of the mill 500mw 6.2v zener. While the output is a bit higher than I would like, it still reduces the heat considerably in the system. This zener can be used with the ESCs in stock form, and if the internal BEC chip has been removed.
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Old 09-26-2013, 11:11 AM   #47
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Default Re: TorqueMaster BR Mini Packs the Power!

Isn't the internal BEC redundant then?
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Old 09-26-2013, 11:12 AM   #48
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Default Re: TorqueMaster BR Mini Packs the Power!

Remind me again which chip to remove and where to install the ZD. Do I source the ZD if so where?

Cheers,

J
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Old 09-26-2013, 11:18 AM   #49
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Default Re: TorqueMaster BR Mini Packs the Power!

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Isn't the internal BEC redundant then?
Yes, but the brain needs to be powered somehow. Most people would be really confused if their ESC didn't boot up without an external 6v source.

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Originally Posted by SkaldidDog View Post
Remind me again which chip to remove and where to install the ZD. Do I source the ZD if so where?

Cheers,

J

Don't worry about removing the chip, it doesn't seem to matter with something else powering the rail between 6.1 and 6.4v. I have a diagram of the position of zener a few posts back. You can either pick up the zener I listed from Digikey, or I can send some your way.
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Old 09-26-2013, 11:23 AM   #50
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Default Re: TorqueMaster BR Mini Packs the Power!

J,

Ping me two if you don't mind.

Cheers,
J
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Old 09-26-2013, 11:36 AM   #51
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Default Re: TorqueMaster BR Mini Packs the Power!

They look really small?

J
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Old 09-26-2013, 11:44 AM   #52
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Quote:
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Yes, but the brain needs to be powered somehow. Most people would be really confused if their ESC didn't boot up without an external 6v source.
.
OK that makes sense.
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Old 09-26-2013, 11:46 AM   #53
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Default Re: TorqueMaster BR Mini Packs the Power!

super tiny, about the size of a 1/2 watt resistor.
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Old 09-26-2013, 11:58 AM   #54
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Default Re: TorqueMaster BR Mini Packs the Power!

Do we still leave Holmes Hold deactivated until firmware update?
Can you post a pic of a ZD inline RTR?
Thanks John.

Last edited by tapped-out; 09-26-2013 at 12:01 PM.
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Old 09-26-2013, 12:04 PM   #55
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Default Re: TorqueMaster BR Mini Packs the Power!

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They look really small?

J
I've heard this before.
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Old 09-26-2013, 12:59 PM   #56
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Default Re: TorqueMaster BR Mini Packs the Power!

You can't just throw that diode in there. It has to be back-biased, right? But of course everyone knows how to do that.
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Old 09-26-2013, 01:01 PM   #57
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Default Re: TorqueMaster BR Mini Packs the Power!

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super tiny, about the size of a 1/2 watt resistor.
Holy crap!!!
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Old 09-26-2013, 01:02 PM   #58
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Default Re: TorqueMaster BR Mini Packs the Power!

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You can't just throw that diode in there. It has to be back-biased, right? But of course everyone knows how to do that.
OK

I don't know.

No.

John...
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Old 09-26-2013, 04:10 PM   #59
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Default Re: TorqueMaster BR Mini Packs the Power!

No biggie. The diode will probably have a colored band at one end and John will tell us which way that band goes.
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Old 09-26-2013, 04:34 PM   #60
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Default Re: TorqueMaster BR Mini Packs the Power!

The black band would be further from the bec when put on the positive wire, as shown in the wiring diagram as well.
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