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Author Topic: Driving a 9 Volts relay with 5 Volts?  (Read 4159 times)

Offline Ikasamoko

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Driving a 9 Volts relay with 5 Volts?
« on: June 06, 2009, 02:53:28 PM »
Is it possible to drive a 9vdc relay with just a 5 volts supply? or a simple 5 to 9 volts converter?
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Driving a 9 Volts relay with 5 Volts?
« on: June 06, 2009, 02:53:28 PM »

Offline kraze

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Re: Driving a 9 Volts relay with 5 Volts?
« Reply #1 on: June 06, 2009, 03:08:37 PM »
You can use DCDC converter. Ano specs ng relay mo.
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Re: Driving a 9 Volts relay with 5 Volts?
« Reply #1 on: June 06, 2009, 03:08:37 PM »

Offline Mayalin22

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Re: Driving a 9 Volts relay with 5 Volts?
« Reply #2 on: June 06, 2009, 03:10:44 PM »
kung small relay lang pwede sir kc me allowance ang voltage ng mga small relay  ;)
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Re: Driving a 9 Volts relay with 5 Volts?
« Reply #2 on: June 06, 2009, 03:10:44 PM »

Offline Ikasamoko

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Re: Driving a 9 Volts relay with 5 Volts?
« Reply #3 on: June 06, 2009, 03:25:07 PM »
maliit nga yung relay..mga 1/4x1/2"...try ko sa 5vdc ma trigger pag walang diode..pero pag may diode ayaw..
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Re: Driving a 9 Volts relay with 5 Volts?
« Reply #3 on: June 06, 2009, 03:25:07 PM »

Offline Mayalin22

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Re: Driving a 9 Volts relay with 5 Volts?
« Reply #4 on: June 06, 2009, 03:32:21 PM »
sir ask ko lang kung gnd ba ang source. I mean NPN transistor po ba gamit nyo? saka baka mababa ang coil resistance hindi kakayanin.
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Re: Driving a 9 Volts relay with 5 Volts?
« Reply #4 on: June 06, 2009, 03:32:21 PM »

Offline ekajara_josh

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Re: Driving a 9 Volts relay with 5 Volts?
« Reply #5 on: June 06, 2009, 03:51:17 PM »
You may use 2N2222 NPN Transistor...

Mas sensitive xa...And fast..

Ayan din ginamit ko when I used to drive a relay(12V)pwede din ung (9V)...

^_~
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Offline kraze

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Re: Driving a 9 Volts relay with 5 Volts?
« Reply #6 on: June 06, 2009, 04:19:38 PM »
Hi Kas, Baka nakareverse yung paglagay ng diode at kung hindi naman baka masyado ng malapit sa limit yung required voltage input mo kaya minsan pwede ma trigger pwedeng hindi.
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Offline Ikasamoko

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Re: Driving a 9 Volts relay with 5 Volts?
« Reply #7 on: June 06, 2009, 04:28:51 PM »
direct 5VDC and drive @ 400mA...


Quote from: krazeneth on June 06, 2009, 04:19:38 PM
Hi Kas, Baka nakareverse yung paglagay ng diode at kung hindi naman baka masyado ng malapit sa limit yung required voltage input mo kaya minsan pwede ma trigger pwedeng hindi.

Hindi naman baliktad..I'm using 4148...
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Offline Mayalin22

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Re: Driving a 9 Volts relay with 5 Volts?
« Reply #8 on: June 06, 2009, 04:54:46 PM »
sir wala bang higher voltage after the 5V supply (i pressumed u have 5v regulator)
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Offline kraze

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Re: Driving a 9 Volts relay with 5 Volts?
« Reply #9 on: June 06, 2009, 04:58:24 PM »
Quote
direct 5VDC and drive @ 400mA...
Kas, pag my diode ok, pag wala ayaw... Try mo check working current ng signal diode baka out of specs sya...
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Offline Ikasamoko

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Re: Driving a 9 Volts relay with 5 Volts?
« Reply #10 on: June 06, 2009, 04:59:27 PM »
Quote from: Tolits on June 06, 2009, 04:54:46 PM
sir wala bang higher voltage after the 5V supply (i pressumed u have 5v regulator)

Wala...hehehe..piniga na yan..

Quote from: krazeneth on June 06, 2009, 04:58:24 PM
Kas, pag my diode ok, pag wala ayaw... Try mo check working current ng signal diode baka out of specs sya...

Yup..baka sa diode nga..

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Offline ferdie444

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Re: Driving a 9 Volts relay with 5 Volts?
« Reply #11 on: June 08, 2009, 02:40:50 AM »
how about kung magparallel ka ng electrolytic capacitor sa coil ng relay?between 47uf-220uf/10v ang value.thanks....
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Offline bletze

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Re: Driving a 9 Volts relay with 5 Volts?
« Reply #12 on: June 08, 2009, 02:30:31 PM »
kung 5 volts ggmitin pede nmng mag reed relay db??
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Offline Ikasamoko

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Re: Driving a 9 Volts relay with 5 Volts?
« Reply #13 on: June 08, 2009, 02:57:35 PM »
^pwede..kaso wala ako pwede makunan dito...
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insomartin

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Re: Driving a 9 Volts relay with 5 Volts?
« Reply #14 on: June 08, 2009, 03:37:34 PM »
kung AC sana yung 5v pwede na siguro voltage multiplier. di q din alam kung possible.

another thing is a very simple smps.
http://cachefly.oreilly.com/make/wp_joule_thief.pdf

di ko alam kung bakit joule thief.
pero from 1.5 v to 3 v
don't have any idea to make it from 5 to 9v modify na lang po siguro.
may usb solar charger ako smps din yung circuit pero very simple
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Offline chopstick

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Re: Driving a 9 Volts relay with 5 Volts?
« Reply #15 on: June 12, 2009, 10:21:01 AM »
Meron ba AC transformer power supply sa circuit mo? Kuha ka na lang sa Secondary winding nito higher voltage at lagyan mo 1 diode at filter capacitor to supply yun 9 V Relay.
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Offline Ikasamoko

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Re: Driving a 9 Volts relay with 5 Volts?
« Reply #16 on: June 12, 2009, 10:34:15 AM »
Wala eh..5VDC USB and source...
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Offline chopstick

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Re: Driving a 9 Volts relay with 5 Volts?
« Reply #17 on: June 12, 2009, 10:55:37 AM »
USB  pala. Bili ka na lang sa Raon ng 6V relay.
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Offline Ikasamoko

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Re: Driving a 9 Volts relay with 5 Volts?
« Reply #18 on: June 12, 2009, 11:10:03 AM »
Meron naman dito mga 5vdc na relay kaso sobrang laki...itong 9vdc naman mga 1/4"x1/2" lang tamang-tama sa paglalagyan ko..kaso 9vdc nga..huhuhu
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Offline chopstick

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Re: Driving a 9 Volts relay with 5 Volts?
« Reply #19 on: June 12, 2009, 11:18:40 AM »
He he he. Bawasan mo yun winding ng relay para bumaba ang driving voltage.
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Re: Driving a 9 Volts relay with 5 Volts?
« Reply #19 on: June 12, 2009, 11:18:40 AM »
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