To operate the electronic 5 volt devices we need to a constant 5 volt output source to use the device without any damage so this content resolve the problem of damaging ,maximum devices work on the 5 volts, we can use this CKT at all the 5 volt operated devices.
Step 1– Things required
- 9 volt battery
- Bread board
- 7805 IC
- 3 mm LED
- Resistor [1k ohm]
- Micro USB pin
- Capacitor 104 value [.1 micro fared]
- Jumper wire, & battery connector
- Extra tools [Stripper , cutter]
How to Make your own 5v output power bank
Step 2– Circuit & component connections.
DC – 9 volt battery generate the potential difference between circuit result electrons will start to flow.
Switch – To on & OFF the circuit.
7805 – Voltage regulator IC , which gives regulated 5 volt output, with input of 9 volt above.
Filter – To reduce the fluctuation ceramic capacitor is connected to in the circuit.
Power indication – 3 mm LED is using for the power indicator which need only 2.5 volt maximum do we connect the 1K ohms resistor to reduce the voltage across LED.
Output load – We can derive 5 volt operated device with this circuit.
Step 3– Implement on breadboard
- put all the components on the bread board, as shown in the figure below.
- one terminal of switch connect to the 1st pin of the regulator ic , connect the 2nd pin to the ground row (blue row) and 3rd to the positive row of bread board.
- connect the both upper RED and lower RED rows, and also BLUE to BLUE rows.
- positive terminal of LED is connect to the 3rd of 7805, through 1k ohm resister.and negative to the negative blue row .
- connect the 0.1 uF capacitor to the positive and negative row of the bread board.
- Check the connection by multimeter.
- Set multimeter on counting mode. [Set nope at diode symbol]
- Check all the connections continuity.
- Also check the short circuiting by putting positive probe to the RED row hole & negative probe to black row hole.
- If multimeter generates beep sound it means circuit is shorted at that case check connection properly and do not connect battery in this condition.
- If there is no beep sound than it is okay. We can go ahead.
- Connect the red wire of micro USB pin to the RED row and black wire of micro USB pin to blue row.
Power connect –
- Connect the positive red terminal of battery connector to the one terminal of the switch .
- Connect negative black terminal of battery connector to the 2nd terminal of 7805.
- Turn switch off.
Step 4 – Circuit output test
- Set the multimeter at DC 20 volt range.
- Pot the positive probe to the positive micro USB pin connected hole and negative micro USB pin hole.
- Turn switch ON and observe the voltage.
- If the multimeter shown different value from 5 volt check your connections, check the output voltage of DC- source, it will be greater than 6volt. Do not connect the micro USB pin to mobile.
- If the multimeter shows 5 volt output than you can plug in micro USB in to your mobile.