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  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Recent content by mamun2a

  1. M

    how can i start 12VDC Fan On OFF instead supplying 220 V with an UPS

    12V mains power supply aahh "12V mains power supply" means inside the ups which is for charging the battery or else?
  2. M

    how can i start 12VDC Fan On OFF instead supplying 220 V with an UPS

    I wish to run a 12 DCfan is ON when the power goes off and Off the Fan when the power come back. actually it is duty of IPS but have to operate DC Fan and Light. Please any body help me with the Circuit Diagram for that. Thanks in advance mamun2a Dhaka, BD
  3. M

    I operate a 6 Volt DC fan with 12 Volt DC, does it damage the Motor/Fan?

    can u give me a short detail of power regisor?
  4. M

    I operate a 6 Volt DC fan with 12 Volt DC, does it damage the Motor/Fan?

    i bought 6 Volt 7Ah Lead acid battery specially for this Fan, but i c, the battery cant serve which i think. it ran 1+ hour with 6Volt 4.5 SLA batt, but now ? happen i cant understand. I use 12V 7AH SLA w/o hassle still now, just the fan ran very fast.
  5. M

    I operate a 6 Volt DC fan with 12 Volt DC, does it damage the Motor/Fan?

    I operate a 6 Volt 4Ah DC fan with 12 Volt 7Ah DC, does it damage the Motor/Fan? due to battery problem i do so, how much damage it may happen to the DC Fan? thanx in advance. mamun2a dhaka, BD
  6. M

    how to reduce 12v 7Ah to 6V?

    btrr 2 get 6V battery. thnx to all
  7. M

    does square wave/60hz adaptor can do harm for charging 12Vsla battery?

    hmm.. **broken link removed** i have 1200VA one, it has 2 battery. i wish to make an extension cable for the extra battery charging. as per picture i've middle of these**broken link removed**
  8. M

    does square wave/60hz adaptor can do harm for charging 12Vsla battery?

    ? about "then i have another option. i ve a UPS of Apollo Brand, from that i may dig out a port for charging this battery"
  9. M

    does square wave/60hz adaptor can do harm for charging 12Vsla battery?

    hmm, that case i miss the option the same adaptor has 15V also, but i avoid that bcoz of 3 volt extra. and in my local i can found Multi volt adaptor of 12V 1A, so it also not perfect. then i have another option. i ve a UPS of Apollo Brand, from that i may dig out a port for charging this...
  10. M

    does square wave/60hz adaptor can do harm for charging 12Vsla battery?

    sorry i am late. this is not the talkin 1 but same. it is UPS battery. **broken link removed**
  11. M

    does square wave/60hz adaptor can do harm for charging 12Vsla battery?

    my charger is of 1.2A, and the battery is 7.2AH
  12. M

    does square wave/60hz adaptor can do harm for charging 12Vsla battery?

    its not near to me now, i'll bring it 2morow. 1/10 amp of its said ampere, i c it on almost every rechargeable battery
  13. M

    does square wave/60hz adaptor can do harm for charging 12Vsla battery?

    i know [may be wrong] that SLA or any battery just down its ampere, voltage is stable. if so then does volt rising is visible?
  14. M

    does square wave/60hz adaptor can do harm for charging 12Vsla battery?

    thanks for your suggestion. but i the Battery level said charge with 12V and 1/10 of the ampere. why they said this?

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