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Be good also to know how it's done on the calculator

We have but just to check ???

27.15 x = 0.27 What's the value of x

What Volts Amps if I have a desk variable power supply 13.5v?

Ok I have connected a 12volt 7.2 amp battery and it works fine, now to charge what voltage and amps would I need ??

i have a digital picture frame which says it has to be supplied with 12volts 0.8amp supply which I have I would like to power it by a battery as I'm going to be using it a art show on my stall,I have a 12volt batttery which is saying 7.2a/h will this do?

What capacitor? The phone line I tested it on is a BT infinity line

I have just purchased an old BT phone which has been converted to use on the a modern BT system, on test the phone rings out fine but when you ring the phone it dosnt ring but picking the receiver up it connects ok. On further investigation the conversation has been done but the 3.3kohm resister...

I have 3 firex mains powered (battery backed up) smoke detectors in my house all interconnected do 3 wires (live, neutral and the interconector) I can no longer get the direct replacement for the firex unit and have been told I can use a aico Ei146RC to replace is this correct ?

Not sure would that change things

I have 3 mains/battery powered smoke detectors in my house the identification model number is: FIREX 120-1125E or PADC240 I Am unable to find any replacement for this on line, is there a replacement ?

I have to do some wiring under my floorboards what's the best way to cut over a joist to split and lift ?

I have just stripped this cast iron gas heater out of a bedroom and wonder if it's worth anything I have googled the make which is Panella but with little success, there is a date of 1929

No I don't think so either it's getting it somewhere I wonder if I earthed out the screen of the 4 core cable coming from the cctv recorder in the loft that would eliminate it ?

Well here is how it is, I fried one mic owing to using a unregulated 12volt PSU, I have now got a replacement mic and have attached a standard 9volt battery onto it to test (the ones you find in a standard smoke detector), it now works fine but I do have an irritating hum which I guess is an...

just purchased a cctv microfone to place in my porch, what power supply do i need usually to run these?

I'm about to embark on a project to decorate my sons room and I want to put a flat screen TV on the wall but I don't want to see any cables, the mains and coax for watching TV are ok but I want to put a hdmi faceplate in and cable it to another part of the room where his ps4 is located, as HDMI...

I'm having a door dipped/stripped back to the real wood, I have taken the metal fittings off to strip but would like to know what the best chemical to use to do this ?

I live in a semi detached house with a chimney stack which should have 8 pots on top, my neibour has his 4 but mine consists of 2, one of them is completely missing and one has been taken off for a metal flue which once came off a back boiler in the downstairs room in the chimney Breast. What I...

http://shop.vitcas.com/heat-resistant-concrete-fireback-16-530-p.asp http://shop.vitcas.com/heat-resistant-fireback-lintel-16-657-p.asp Yeah I know what you mean about the drawing, I'm purchasing as above links Just need to know the min max distance from back to front lintel throat