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how do I make a speeder function for amps power output?
I want to be able to regulate the power output of the battery charger in a car just like a speeder.
Do you want the voltage to remain constant or do you want the current to remain constant?
Essentially, there are 2 types of battery chargers:
1] constant current &
2] constant voltage.
The most common of the two is constant voltage whereby a constant voltage is applied to a battery. Due to the battery's internal resistance & its discharged state, the applied voltage will be higher than the battery, causing a current to flow. As the battery becomes more charged, the voltage difference decreases, which in turn decreases the current flowing through the battery.
In a constant current battery charger, the applied voltage slowly decreases to meet the battery voltage, as it reaches a charged state.
Varying the applied voltage in a constant voltage battery charger will therefore vary the charging current. These type of chargers are easiest to design & build.
A high charge current can damage a battery.
How to make a Car Power Amp work on AC power using a PC power supply