I just got my first voltmeter and would like to learn how to use it by modifying a circuit to run a laptop.
what i want to learn is:
- About volts, amps and watts. i know watts are an amount so are volts the speed of a hypothetical train and amps the power behind it?
-if i have a PSU giving 90W 19.5V 4.7A these numbers are just max amounts right? do the volts have to match? laptops get 19.5ish volts to power the PC use and charge the battery. I want to understand that better and figure out if i would hurt anything just giving the laptop fewer volts without the battery.(my desktop PSU is a 550W (maxed used yet is 220 watts) single 12v rail platinum rated with a connectors that can supply me with (+3.3V@20A,+5V@20A,[email protected],[email protected],[email protected])
-experiment in using resistors, capacitors and transistors.--i think i might be able to use a resistor on a circuit from a molex connector on my PC power supply to drop from 12v to 10.8v that the battery normally would supply to my laptop motherboard. would the type of electricity be different from the battery as apposed to what i would get from my PSU?(AC/DC). if so my power brick normally sends out 90W 19.5V 4.7A.
-anything else that you can add that you feel like might help me catch on correctly.
Thanks friends and happy posting xD
what i want to learn is:
- About volts, amps and watts. i know watts are an amount so are volts the speed of a hypothetical train and amps the power behind it?
-if i have a PSU giving 90W 19.5V 4.7A these numbers are just max amounts right? do the volts have to match? laptops get 19.5ish volts to power the PC use and charge the battery. I want to understand that better and figure out if i would hurt anything just giving the laptop fewer volts without the battery.(my desktop PSU is a 550W (maxed used yet is 220 watts) single 12v rail platinum rated with a connectors that can supply me with (+3.3V@20A,+5V@20A,[email protected],[email protected],[email protected])
-experiment in using resistors, capacitors and transistors.--i think i might be able to use a resistor on a circuit from a molex connector on my PC power supply to drop from 12v to 10.8v that the battery normally would supply to my laptop motherboard. would the type of electricity be different from the battery as apposed to what i would get from my PSU?(AC/DC). if so my power brick normally sends out 90W 19.5V 4.7A.
-anything else that you can add that you feel like might help me catch on correctly.
Thanks friends and happy posting xD