How to assemble a control lamp for 12 and 220 V?

  • Dec 18, 2020
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Manufacturing control for 220V.

To assemble the control, you will need tools such as a screwdriver, soldering iron, wire cutters, or pliers. Depending on the situation, you may only need some of these accessories. For example, if soldering is not foreseen, you can do without a soldering iron. It should be noted that the wires can be soldered to the cartridge, and not screwed, so it turns out more reliable.

The manufacturing process consists of the following stages:

  1. Disassemble the cartridge into its constituent elements to gain access to the connection points;
  2. Connect the wires to the terminals of the cartridge, for this, put them into the terminal clamp and tighten them tightly with a screwdriver, and if such a connection is not possible, solder the wires to the terminals;
  3. Assemble the cartridge, lead the control wires into the hole specially designed for this;
  4. Connect or solder the probes to the wire terminals, insulate the connection or soldering points, the probes themselves must have sufficient insulation so that during work it is excluded the possibility of touching bare current-carrying details;
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  5. Screw the lamp into the socket, if necessary, cover it with a protective cover.
Figure: 1: Ready control for 220V

The 220 V control is ready to use for continuity of wires and electrical circuits. With constant operation of such a control, do not forget to periodically check its performance in a known working network that is energized.

For 12V car

Automotive control, unlike household control, performs measurement operations in DC circuits with a supply voltage of 12 V. Therefore, you will not be able to use the 220V control as an automotive probe. But the manufacturing principle will be identical, although it is very convenient to use LED controls for car diagnostics instead of bulbs.

In view of the technical features of the car's wiring, the 12 V control, performed according to the principle described above, does not provide complete information about the state of affairs in the circuit. Because of what, the control of an auto electrician can be equipped with the following functional additions:

Figure: 2: modernized auto control

Such a scheme, in addition to monitoring the state of the circuits, allows you to determine the plus or minus on the outputs and the signal intensity. Due to the multi-polarity of the LEDs, one of them will light up when you touch the positive contact, and the second will signal when it contacts the negative terminal.

To implement such "control" you need:

  • Connecting wires - they are selected in accordance with your needs, but professional auto electricians recommend making a length of at least 2 m, since you have to install the probe in hard-to-reach places;
  • Probes can be plugs or crocodiles, for single use, you can simply strip the edges of the wires from insulation and do without probes;
  • Bulb holder and 12V bulb itself;
  • Button - designed for switching in the control circuit, selected according to the value of the switched current;
  • Two LEDs - in this example, multi-colored models are used (red for signaling the positive terminal and blue for the negative terminal);
  • Housing - designed to place all the parts and install light signaling devices in a conspicuous place; as a body you can use a marker, felt-tip pen or a plastic tube from under the glue.

Simplest 12V control for circuit indication

To make such a device, you need a disposable syringe, a 12V light bulb (you can replace it with an LED), a wire, an elastic band, a stationery knife, and pliers.

The manufacturing process consists of the following stages:

  • disassemble the needle from the syringe and thread it into the plastic base so that one end is completely immersed inside the syringe - it should act as a contact for the light bulb.
Figure: 3: position of the needle in the plastic base
  • measure the length of the wire so that it is convenient for you to wrap it around the base. Strip this section of insulation, wrap it around the lamp and tighten with pliers. This procedure can be replaced by soldering for more reliable contact.
  • If the lamp base moves freely inside the syringe, place a rubber band on top of it to seal. Insert the lamp so that the unused contact touches the needle.
Figure: 4: insert the bulb into the syringe
  • Cut the plunger from the syringe so that it covers the lamp flush with the body. Make a hole in the piston for the wire, otherwise manufacturing may be very difficult.
Figure: 5: ready-made syringe control

The control is ready, you can use it to find a circuit in the car wiring or check the health of individual elements.