reaver26
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« Reply #40 on: January 25, 2010, 05:16:43 PM » |
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ano ang source nung MCU mo bago maging 5V? 'di mo naman directly ipo-power ng MCU 'yung relay, pang-drive lang 'yung 5V.
 yan gamit ko na setup to amplify my 5vdc output to trigger the relay... sa mcu ako kukuha ng VDD designated pin ng MCU ang trigger ko ng relay.... |
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« Reply #40 on: January 25, 2010, 05:16:43 PM » |
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rdpzycho
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« Reply #41 on: January 25, 2010, 05:26:35 PM » |
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'yung supply niyo is 5V na kaagad? ang papalitan lang naman diyan kung sakali e 'yung papunta sa relay.
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reaver26
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« Reply #42 on: January 25, 2010, 05:47:06 PM » |
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'yung supply niyo is 5V na kaagad? ang papalitan lang naman diyan kung sakali e 'yung papunta sa relay.
6volts relay gagamitin ko kasi yun na lang available... ano ang papalitan ko po dyan sa setup na yan para mag energize ang 6volts relay? |
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marcelino
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« Reply #43 on: January 25, 2010, 05:53:19 PM » |
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6volts relay gagamitin ko kasi yun na lang available... ano ang papalitan ko po dyan sa setup na yan para mag energize ang 6volts relay?
most 6V relay could be driven by 4.5V to 7V. experiment ka muna. |
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reaver26
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« Reply #44 on: January 25, 2010, 06:03:21 PM » |
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most 6V relay could be driven by 4.5V to 7V. experiment ka muna.
will the setup you suggested will trigger the 6volts relays sir? =< |
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marcelino
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« Reply #45 on: January 25, 2010, 06:08:30 PM » |
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will the setup you suggested will trigger the 6volts relays sir? =<
look at the datasheet of your relay.... indicated din naman kung ok lang ang less than 6V. i am using 6V relay (nabibili lang dyan sa mga local electronic shop), as per data sheet, 4.5 to 7 daw. and it worked naman. try to experiment on it nga... |
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LTSGü
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« Reply #46 on: January 25, 2010, 09:59:06 PM » |
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HELP URGENT: sir marcelino...... wala na available 5vdc/220vac
6vdc/220vac na lang po...
paano po ito.... 5vdc lang output ng MCU ko.... @reaver: kung gagawin mong supply ng relay (ung nasa collector part) is ung output ng MCU mo, di kaya kapos yung maibigay na ouput current ng MCU sa relay?? better kung ung supply ng relay (yun nasa collector part) is yung supply din na ginamit mo sa VDD ng mcu mo.. tapos ung output ng MCU mo is connected dun sa base ng transistor mo pang trigger lang in series with your R1... |
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ferdie444
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« Reply #47 on: January 25, 2010, 11:05:01 PM » |
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@reaver26,dapat ang supply mo doon sa collector ay 9vdc tulad ng supply mo sa mcu dahil kung parehas na 5vdc @ same source ay hindi kayang idrive yong relay mo @ kataasan ay magrattle yan.dapat iba ang collector voltage mo @ ang input mo nman sa base ay yong mcu out.thanks...
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marcelino
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« Reply #48 on: January 26, 2010, 01:50:52 AM » |
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@reaver26,dapat ang supply mo doon sa collector ay 9vdc tulad ng supply mo sa mcu dahil kung parehas na 5vdc @ same source ay hindi kayang idrive yong relay mo @ kataasan ay magrattle yan.dapat iba ang collector voltage mo @ ang input mo nman sa base ay yong mcu out.thanks...
ferdie, di ko pa naman na eexhaust ang paggamit ng relays, but i am using the same circuit. ginamit ko sya DITO. Pero ang relay ko kasi dyan at 5v ang rating ng coil. may pinaggamitan din ako, 6V rated na relay, HLS8L-DC6V , ok naman. Stated on that datasheet, i could use voltage from 4.5 to 7.8. kinukuha ko ang 5V sa same rail ng VDD ng MCU. siguro i was just that lucky at di naman nagrarattle. or perhaps, mataas lang ang current rating ng supply ko. I used 2N2222 for both projects. correct me if im wrong. thanks  |
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"Don't take life seriously. After all, no one has ever come out of it alive. -Bugs Bunny"
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ferdie444
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« Reply #49 on: January 27, 2010, 02:43:58 AM » |
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agree ako dyan sir marcelino dahil doon na sila nagkatalo sa current rating ng power supply mo na mataas na,stabilized @ regulated.well,doon sa case ni reaver26 ang main issue na lamang is the current rating of his ps para magamit niya ang 5vdc as input signal and @ the same time collector supply,otherwise separate na lamang yong ps ng kanyang relay driver(transistor Q1) para ma-ienergize yong relay.thanks...
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simplicity
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« Reply #50 on: February 07, 2010, 08:08:26 PM » |
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tanong ko lang po kung ang relay ay may polarity?
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rdpzycho
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« Reply #51 on: February 08, 2010, 11:36:33 PM » |
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wala naman. electromagnet siya, at ang bakal ay didikit sa kahit anong polarity ng magnet.
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Redskin
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« Reply #52 on: February 09, 2010, 12:14:52 AM » |
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@reaver26 gamitin mo naman breadboard mo paminsan-minsan  |
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-Al-
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« Reply #53 on: March 06, 2010, 08:00:11 PM » |
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yan gamit ko na setup to amplify my 5vdc output to trigger the relay... sa mcu ako kukuha ng VDD designated pin ng MCU ang trigger ko ng relay.... uhm...ask ko lang po..pano po mas proper way ng pag trigger ng relay?kasi po pag nag-tritriger ung relay namin, nagrereset ung PIC namin.. T_T. ganito din po connection ko.. |
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DigitalMind
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« Reply #54 on: March 06, 2010, 08:27:46 PM » |
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yes.  una get a faster diode (D1) than the 1N4004 2nd i hiwalay mo sa mcu power. get a separate supply for inductive loads. 3rd pwede din yung uln2003 eto lagi gamit ko for driving relays and other inductive loads.  |
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-Al-
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« Reply #55 on: March 06, 2010, 08:41:59 PM » |
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hiniwalay ko na po ung supply ng PIC..nagrereset parin po cya..but i havnt tried ULN2003..uhm , how about triac po, pede po kayang substitute sa relay?
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nucleus
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« Reply #56 on: March 06, 2010, 08:46:51 PM » |
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1N5819 across sa coil ng relay pati narin across sa 5V supply at maglagay ka narin ng 100nF ceramic capacitor sa supply pin |
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Hi! I'm nucleus and i carry the charge  Hindi ako nandito para makipagkumpitensya kanino man |
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nucleus
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« Reply #57 on: March 06, 2010, 08:49:27 PM » |
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hiniwalay ko na po ung supply ng PIC..nagrereset parin po cya..but i havnt tried ULN2003..uhm , how about triac po, pede po kayang substitute sa relay?
mas maigi nga kung triac tapos gumamit ka din ng triac output optocoupler |
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Hi! I'm nucleus and i carry the charge Hindi ako nandito para makipagkumpitensya kanino man |
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DigitalMind
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« Reply #58 on: March 06, 2010, 08:57:36 PM » |
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1N5819 across sa coil ng relay pati narin across sa 5V supply at maglagay ka narin ng 100nF ceramic capacitor sa supply pin mas ok itong solution ni aljur_a don't go to triac... medyo complex at mapapamahal ka pa. kung may existing relay and transistor driver kna. |
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nucleus
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« Reply #59 on: March 06, 2010, 09:26:42 PM » |
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mapapamahal ka pa. kung may existing relay and transistor driver kna.
agree kung sa complexity naman same lang kung gagamit ka ng optocoupler na triac output at mayron naring zero crossing detector |
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Hi! I'm nucleus and i carry the charge Hindi ako nandito para makipagkumpitensya kanino man |
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The Philippine Electronics and Technology Forum
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January 21, 2010, 10:05:43 PM
MOVED: Question about relays to be used with MICROCONTROLLERS
