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$50 power
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Topic: $50 power (Read 2843 times)
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robaker
Jr. Member
Posts: 16
Helpful? 0
$50 power
«
on:
March 06, 2010, 04:17:03 AM »
the grounds of 4,8V and 9v are shared...
Is sharing the ground of 4.8V and 9V battery necessary ?
If we seperate the grounds of both 4.8 and 9v also , is there any risk?
if not ,how does one know ?
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chelmi
Supreme Robot
Posts: 496
Helpful? 15
Re: $50 power
«
Reply #1 on:
March 06, 2010, 08:54:20 AM »
they have to be connected. Voltage is not an absolute value, you need a common ground.
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robaker
Jr. Member
Posts: 16
Helpful? 0
Re: $50 power
«
Reply #2 on:
March 07, 2010, 02:03:16 AM »
--Voltage is not an absolute value, you need a common ground.--
?? plz explain this line...
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SmAsH
Supreme Robot
Posts: 3,959
Helpful? 75
SoR's Locale Electronics Nut.
Re: $50 power
«
Reply #3 on:
March 07, 2010, 02:13:46 AM »
I don't understand the first part but, keep the grounds connected, you need this.
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Howdy
cyberfish
Robot Overlord
Posts: 163
Helpful? 3
Re: $50 power
«
Reply #4 on:
March 07, 2010, 02:39:43 AM »
Voltage = potential DIFFERENCE - difference in potential energy between 2 points.
Without a common ground, the 2 differences won't do much. You will have essentially 2 separate circuits.
In short, they have to be connected together.
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$50 power
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