Voltage

Adjustable power supply:  This is an adjustable power supply. we can adjust the voltage using this circuit. it’s an easy circuit diagram. here use lm317 ic. we can adjust 1.25 voltage to 37 voltage and 1.5 amperes. this circuit is only for DC voltage. transistor circuit diagram of 2sa1943 and …

how to make transformer for the amplifier: Transformer making is important to learn electricity and electronics. this is the way to transition the voltage. we can make step-up voltage and step-down voltage by using this transformer. here we are going to make a step-down  with 50-0-50 voltage. how to make …

How to make dual power supply: How to make a dual power supply we can see we use two 30-0-30 voltage transformers to make this 70-35-0-35-70 voltage. here use only four capacitors but we have to use more capacitors to get good amperes. also diode needs a heat sink. two …

how to make 12 voltage: how to make 12 voltage? this is the diagram to make strong volt. sometimes we need fixed amperes. but 7812 can maximum of 1 ampere. that time we have to make this type of circuit diagram to make strong amperes. here use an NPN transistor. …

led light power supply 5 watts: This is the LED light power supply for a 5-watt LED light. this circuit can make 5 watts. here 4 diodes to make AC to DC voltage. the capacitor makes the watts. this circuit can make AC to DC. but it’s dangerous. don’t touch …

voltage regulator circuit diagram: This is the voltage regulator circuit diagram for 12 voltage. this type of circuit can make strong amperes. we usually use 7912 for 12 voltage. this is for the negative voltage. here, I used one 12-volt Ziner diode. this ziner diode regulates the voltage. we get …

How to make DC voltage: HHow to make dc voltage 50-0-50? here we are making high voltage using low voltage transformer. we used two transformers to make this voltage. our transformer is 25-0-25 voltage but we need 50-0-50 voltage. for this, we use two transformers. we don’t use the full …

Fixed voltage regulator: How to make a fixed voltage regulator? it’s an easy circuit diagram to make this circuit. we can use 100 voltage input and the output will be according to the ziner diode. here this circuit used 15 voltage ziner diode. so we can get 15 volts from …

How to make pure DC voltage: This is the circuit diagram to make pure DC voltage. we usually make DC voltage for our amplifier. but this is the best way to make pure DC. if we make voltage like this, there will be no bad noise from the amplifier. 1st …

auto cut-off battery charger: This is an auto-cut-off battery charger diagram for the 12-voltage battery. this circuit can protect the battery from overcharge. this circuit needs to be adjusted using the variable. at first, we have to fully charge the battery. after charging the battery we have to cut off …