How many milliamps does a 1.5v AA battery have? Battery replacement.?

Question

I have 6 childs toys to use in a display. Each toy has 4 AA batteries totaling 6 voldts dc. I want to use a battery replacer for them. Can I run 2 toys off of one 12 volt dc replacment?
With dc electricity, if the device is 6 volts can I use 9 volts... cn you go higher or lower? etc. Can I run 2 or 3 toys at the smae time off of a higher milliamp 12v dc replacement? thanks

I am trying to hook up 20 bouncing tiggers. All the same toy. Each has 4@ 1.5AA batteries. THey have Duracell Alkaline in them. I tried a battery replacement for a ps1 game unit but it is only 4.5 vDc and for some reason you had to push the trigger (hand) twice to get it to activate. The toy Bounces up and down and sings the tiger song for about 10 seconds. 6 volts per tigger. Will one regulated power supply do or should I buy more than one. Thank you, Kim

Answer 1

Wow, how many questions are you asking here!!

Ok:-

AA batteries can vary from around 200mah for cheap batteries to nearly 3000 maH for Lithium and the better NiMH rechargables. Akaline or often around the 1500-2000maH range.

No you cannot usually run two toys in series as one is likely to take a little more power than the other - even if identical units they might "go out of sync" and one might be running a motor while the other is just blinking a light etc. If you do this, the toy that requires the most power will get the smallest voltage over it - and the toy that needs the least will get the most!

As for using 9v instead of 6v, it depends a little but most things are NOT going to appreicate being given 50% higher voltage than they are designed for. In the case of any filament lamps, they might already be a little overstressed when given a set of fresh batteries at just 6v !

You CAN run several toys in PARALLEL from ONE power supply yet - but this should be 6V and regulated. Obviously the power supply has to be powerful enough to drive all the topys you connect to it.

You should use a regulated supply really, this means the power supply (battery replacement lump) will deliver 6v +/1 about 0.1V Everything will be fine. If you use an UNREGULATED supply, then if the load is very light, the voltage could increase significantly - and if it has a speaker may also produce a loud buzzing.

Hope that gives you as little to be going on with. If you need more info, either contact directly OR edit your question to add more info - eg: what SORT of toys, are they all the same, etc etc

Regards
Mark

Answer 2

The first answer is very good, but they didn't get to see the additional details. 20 toys running in parallel would probably at least 2 to 4 amps at 6V. There is one at Fry's Electronics that you might be able to use with several toys in parallel. I'd suggest at least 2 (10 toys per supply), but you might need more, depending on the toys' current draw.

Alternately, you could go with NiMH rechargeable batteries and just keep recharging and swapping them. Fry's Electronics has a 24 pack for $35. You'd need several of those and a charger, too.

Your questions are pretty basic electricity questions, so I'd also suggest you find someone with some electrical wiring experience to help you out so you don't accidentally kill 20 toys if you go with the power supplies instead of the batteries.

Answer 3

We are not designing the tigger, its already there. Q is: how long does it operate on a fresh 4XAA batts. Then use the 2.85A info given by our co-member and calculate ampacity. However, regulated p-packs should work, and u need enough to complete your 6V per set.