Author Topic: High Current 24v DC Motor Driver (Read 832 times)

luibog · « **on:** February 23, 2011, 11:43:22 PM »

pwede po ba to gawin?

d kc kaya ng 2222a ung 24v 9amp

ung FB260n d kaya ung input ng pic to FB260n, pwede ko kaya lagyan ng resistor na pull-up?

tnx

Philippine Electronics Forum · « **on:** February 23, 2011, 11:43:22 PM »

rdpzycho · « **Reply #1 on:** February 23, 2011, 11:56:49 PM »

sa unang schematic, 'di naman dadaan doon sa 2N2222 'yung 9A kaya ok lang 'yun.

BTW, pull ups are never used to assist switching dahil magiging fix siya doon. darlington configuration ang ginagamit to increase gain. pwede ring Totem Pole kung MOSFET naman 'yung transistor.

Philippine Electronics Forum · « **Reply #1 on:** February 23, 2011, 11:56:49 PM »

luibog · « **Reply #2 on:** February 26, 2011, 04:56:38 PM »

hindi kaya pag sa breadboard na, meron ka ba ibang alam na h-bridge na 24v 10amp? tnx

Philippine Electronics Forum · « **Reply #2 on:** February 26, 2011, 04:56:38 PM »

rdpzycho · « **Reply #3 on:** February 26, 2011, 08:13:23 PM »

alin ang hindi kaya? 'yan ba 'yung mismong schematic? kasi kung 'yan mismo, walang problema 'yung 2N2222 diyan. kung hindi niya kaya dapat sumabog 'yan.

kung naka-breadboard din 'yung motor, posibleng 'di kayanin nung breadboard 'yung current. hindi designed for high current ang breadboard. I'd suggest using protoboard (PCB-type na breadboard pattern). for laboratory experiments lang advisable ang breadboard.

Philippine Electronics Forum · « **Reply #3 on:** February 26, 2011, 08:13:23 PM »

luibog · « **Reply #4 on:** February 27, 2011, 02:36:33 AM »

un nga po hindi po kaya nung 2222 nakailan na po ako transistor hehe, kc tntry ko pag sa 12v mabilis uminit pero pag seniries ko na ung batteries 24v na d na kaya ng 2222, nag try naman ako sa mosfet and d ko sya ma on pag kinabit ko 2222 to mosfet fb260n, tsaka po pala bakit pag nag darlington pair ako parang may voltage drop nag pair ako ng 2222 pero parang imbis na mag gain ay humina pa

Philippine Electronics Forum · « **Reply #4 on:** February 27, 2011, 02:36:33 AM »

rdpzycho · « **Reply #5 on:** February 27, 2011, 04:23:48 PM »

hindi nago-on? dinarlingtion 'yung 2222 sa FET? ano rating nung relay? pinapalitan niyo ba 'yung relay kapag 12V 'yung source at 24V 'yung source? ano 'yung measured na resistance nung coil ng relay?

luibog · « **Reply #6 on:** February 27, 2011, 08:40:46 PM »

hindi nman, ang ginawa ko is pair ng 2222 and output is to input of mosfet, ung relay is 24v ung coil

rdpzycho · « **Reply #7 on:** February 27, 2011, 08:54:49 PM »

emitter follower ang kailangan mo to drive a MOSFET, pero mas ok kung totem pole.

ano resistance nung coil ng relay? typical kasi nasa 100mA to 250mA ang coil current ng relay, kayang-kaya pa dapat ng 2N2222. 2222 lang din ang ginagamit namin to drive relays. kaya dapat walang problem, unless hindi exact 'yung schematic na naka-post.

bravokilo · « **Reply #8 on:** March 17, 2011, 07:48:36 PM »

Ah, Luibog sis. I think your problemis you are taking the pull current for the 222 from the 24V line. to neg with dapat 24V and coil ng relay mo. Pero and makikita ko na sinasabi mo, pumuputok and 222. By the way walang kinalaman and high amps dun. Ganito, get a 12V coil relay. Insert a high value resistor dun sa 24V line, series a 7812 VR. Try a high value R pababa unitl na o- ON and relays. Ayan hinde na masunog ang 2222.

BK

Philippine Electronics Forum · « **Reply #8 on:** March 17, 2011, 07:48:36 PM »

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