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Author Topic: voltage increase =rf range increase?  (Read 8104 times)

bbrick

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voltage increase =rf range increase?
« on: July 13, 2008, 03:01:43 PM »
The voice alert sensors I got use 9 volt batteries .  what happens if the vlotage is increased on a ms16a for example?
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Alan V

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Re: voltage increase =rf range increase?
« Reply #1 on: July 13, 2008, 04:28:59 PM »
You can only increase the voltage to about 5V.  Any higher, and the PIC microprocessor can be damaged.   The Op-Amp can go up to 16V.  I'm not sure about the passive IR sensor, but I think it should be okay at 5V.

Try decreasing the value of R3 instead.  It may increase the curent to the transmitter.

Keep us posted.
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bitman

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Re: voltage increase =rf range increase?
« Reply #2 on: July 13, 2008, 07:29:46 PM »
Prolly smoke... But yea, keep us posted  ;D
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Long live X10! - Because I just like it is all.....

bbrick

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Re: voltage increase =rf range increase?
« Reply #3 on: July 13, 2008, 07:39:24 PM »
I'm going to give it a shot on an ds10a after I try "f" connector and lunar lander antenna mod.  I already tried extending the antenna the CM15a came with, not much help.  At least the stuff is so cheap you don't mind blowing one or two up.  Wish I was electrical engineer instead of civil.  Electrical too hard.
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HA Dave

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Re: voltage increase =rf range increase?
« Reply #4 on: July 13, 2008, 09:42:39 PM »
Quote from: bbrick on July 13, 2008, 03:01:43 PM
The voice alert sensors I got use 9 volt batteries .

Voice Alert Sensors? Those sound handy..... got a link?

I use a voice alert setup that involves using X10 floodlights (hardwired) although I can also use X10 or other wireless devices with it. The voice system I use (BVC) works both ways (NOT just announcements) with my X10 Active Home Pro [CM15A and AHP software]. So the babymonitor microphone system I setup allows me to control my X10 automation via voice commands.

You can see the system "in action" at my YouTube Videos. Check out the links.
« Last Edit: October 15, 2009, 02:26:05 AM by -Bill- (of wgjohns.com) »
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Home Automation is an always changing technology

bbrick

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Re: voltage increase =rf range increase?
« Reply #5 on: July 13, 2008, 10:02:27 PM »
w w w. v o i c e a l e r t. c o m

Sensors are really sensitive.
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