Friday, February 12, 2010

Running A Toy Motor Using Batteries Using A Stronger Battery For A Motor.?

Using a stronger battery for a motor.? - running a toy motor using batteries

I have to do a school project. I am modifying some toys in one. Reduce the weight of the project, I'm replacing all the batteries, which I have used to separate and be used instead, with only a 12V 7Ah sealed lead-acid battery. Now my question is: since one of the toys of an engine have two D batteries, I now extend the new battery, I tried a 5k ohm pot. Mass and drag reduction, but does not seem to work, because I had almost all the way down to about 50 ohms, in the pot and started heating cable. I do not know what to do if someone help me, I can apriciate is greately. (just what I thought, a 5V voltage regulator, but for adviceE before hand)


billruss... said...

DC motors is sufficient to note the care must be taken with a series resistor. They try to reduce 12 volts to 3 volts, not a good idea too. Try a bottle of 100 ohm 5 watts or pot 50 ohm 5 watts. Finding the right value and in a 5-watt fixed resistor instead of the pot.

If the cables are warmer, you use too little son class. You must use at least # 20's son.

A 5-volt regulator will help if you have a 5-volt motor, but it has a 3-volt motor.


kerry k said...

Use the cursor. Better still, providing the necessary voltage for the various parties created by the regulators to provide the required voltage. A 317 SM regulatory variables, you can buy at Radio Shack, and the 2 resistors that the device needs to respond to their needs.

Steve C said...

D non-rechargeable batteries are typically 1.5 V, 1.2 V rechargeable for "exotic" is 1.6V. I suspect the toy was 2 * D-cells connected in series, ie the motor is switched 3V

The temperature increase occurs due to voltage drop in the components. Note that the strength of the heat must be dissipated, the voltage drop *) on them (pot + Cable * Currently.

Even a voltage regulator LM200 scattered like a fair bit of heat and power, if you eat at 12V and has an output of 5V and a current exhibition.

An idea is a quick and dirty regulator has a PIC microprocessor, used to feel the tension in a liner. When this voltage is low, this line will get in touch, to a higher voltage line usinga transistor switch, discharging a capacitor. When the voltage was high, the transistor is open, so that capacity) reduces to the start of his own (the power supply voltage over time. (Ideally) a transistor or a switch turned off the heat losses should be turned on much smaller. It will require large capacitors on the inputs and outputs to reduce the waves, but should make his way. (You may also need the voltage divider in the lines to the voltage could reduce detection of votes at a safe level for the photo) to 2 pins per output line use, he can only drive a couple of lines controlled by the photo, can and still leave room to add "features" of ICP. (can be a programmable digital controller + monitor, or other characteristics)

You must firstCalculate / Measure the voltage and current of the motor on the original toy. This gives the conditions that the solution must be near. Then the choice of the resistance / etc regulator flow requirements.

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