Steps to make a 5 Volt LED Test

A five-volt LED tester could be built using common electronic components which can easily be bought at any electronics store. This tester design relies upon an easy LED circuit composed of the battery, a resistor, as well as an LED. To attain five-volt operation, a 7805 current regulator is put into the fundamental circuit. For simplicity of use, a retention-contact IC, or Integrated Circuit, socket can be used for quick connection from the LED towards the tester. Portability and reliability will also be integrated into this design, therefore, soldering the connections would be the best option for putting together the tester.

        1

        Place the 7805 regulator in to the small PC board and bend the hooks slightly, with pliers, therefore it stays within the board. While using data sheet, note which hooks are Input, Ground (Gnd), and Output.

        2

        Place the retention-contact IC socket in to the board, near to the 7805, and thoroughly bend the 7805 Ground pin therefore it makes connection with one row of 4 hooks (around the socket). Solder the floor pin towards the four hooks, ensuring each one is connected.

        3

        Place one leg (pin) of the 330 ohm resistor in to the board and solder the lower limb towards the Output pin from the 7805. Place another leg from the resistor near the non-soldered hooks from the socket. Bend that leg and solder it towards the row of 4 hooks, ensuring each one is connected.|LED MR16

        4

        Place the red-colored and black wires from the nine-volt snap connector into one hole within the board, near to the 7805. Solder the red-colored wire towards the Input pin (from the 7805) and solder the black wire towards the bent Ground pin.

        5

        Fasten the nine-volt holder clip up side from the board having a #6 machine screw and nut, ensuring the snap connector reaches it.

        6

        Clip the more hooks beneath the board, with wire blades, and double-check all connections.|MR11 LED SpotLight

        7

        Place a nine-volt battery within the clip and fix the connector. The tester has become "on".

        8

        Touch the more leg from the LED (the anode) to some contact around the socket side that's attached to the resistor. Touch the shorter leg (the cathode) to some contact on the other side from the socket. When the LED is within good working order, it will light.

Tips & Alerts

    1. It's not necessary to place the LED in to the IC socket, just touching the metal contacts works. Should you choose wish to place the LED, contain the legs close to the finishes because you might want to push the legs in to the socket.

    2. Also have a practical, reference LED on-hands to determine the tester. You may also let it rest within the IC socket. In the event that does not light, then there's a problem using the battery or even the tester.

    3. The 7805 data sheet might suggest using bypass capacitors using the regulator. Individuals capacitors aren't essential for this tester.

    4. The 7805 regulator can become warm after prolonged use. Some warmth dissipation is really a normal area of the regulator's operation.|GU10 LED SpotLight

    1.Take safety safeguards when soldering. Put on ANSI approved safety goggles, put on proper clothing to safeguard from burns, ensure proper ventilation and not leave the iron unwatched.

    2. Unplug battery connector in the battery if not being used.

    3. When the 7805 regulator becomes hot to touch, immediately disconnect battery. Whether it happens frequently, you might want to give a warmth sink into it or you might want to change it.