Sunday, February 7, 2016

How to Build 12 Volts Transformerless Power Supply using Zener Diode

ElcoHow. - There are two kinds of power supply according using transformer, these are using transformer and not using transformer or called with transformerless power supply. In here we will give you one project of power supply with the title How to Build 12 Volts Transformerless Power Supply using Zener Diode. In here we will give you electronic circuit, component list, description, how to build, and some software that used to build this power supply.

You also can read: How to Build Transformerless Power Supply 30V 1A using Thyrirstor

Electronic Circuit
Component List
  1. Resistors
  2. Capacitors
  3. Zener Diodes
  4. Diodes

Electronic circuit like in Figure 1 above is 12 Volts Transformerless Power Supply using Zener Diode circuit. According Electroschematic site that published this circuit describe that this 12 Volts transformerless power supply take advantage of the fact that a Zener diode is also a normal diode that conducts current in the forward direction. During one half wave, the current flows via D1 through the load and back via D4, while during the other half wave it flows via D3 and D2. Bear in mind that with this circuit (and with the bridge rectifier version), the zero voltage reference of the DC voltage is not directly connected to the neutral line of the 230-V circuit.

This means that it is usually not possible to use this sort of supply to drive a triac, which normally needs such a connection. However, circuits that employ relays can benefit from full-wave rectification. The value of the supply voltage depends on the specifications of the Zener diodes that are used, which can be freely chosen. C2 must be able to handle at least this voltage.

The amount of current that can be delivered depends on the capacitance of C1. With the given value of 220nF, the current is approximately 15mA. A final warning: this sort of circuit is directly connected to mains voltage, which can be lethal. You must never come in contact with this circuit! It is essential to house this circuit safely in a suitable enclosure.

To build 12 Volts Transformerless Power Supply using Zener Diode, you need some skill as follow:
  1. Basic soldering.
  2. Read a basic schematic.
  3. Assembling electronic component
  4. Design PCB layout
  5. Testing voltage and current
  6. Know Thyristor component
Tools and Material

In this project, you must prepare some tools and material that used as the supporting to build 12 Volts Transformerless Power Supply using Zener Diode as follow:
  1. Tools: soldering iron, cutter, multitester, and Project Board.
  2. Material: Tin, PCB

When you want to realize this 12 Volts Transformerless Power Supply using Zener Diode circuit into real application, you can build it as like design PCB layout using good software as like: PCB Wizard. 
How to do?

For more information about this project step-by-step you can follow this project of 12 Volts Transformerless Power Supply using Zener Diode you can read below.
  1. Prepare electronic component listed, material and tools needed.
  2. Firstly you can try this circuit using project board tool.
  3. After you surely with this circuit work properly, now you can begin with design PCB using PCB Wizard.
  4. After designed, now you can make the PCB layout to put these components. You can make PCB by your self or order it according your PCB layout design.
  5. Put all component to the PCB layout and soldering all component.
  6. Now you can test, input and output voltage and current from this circuit. Please read caution below.
  • Do not put all semiconductor component like Zener, Diode.
  • Do not touch any electrical parts of this transformerless power supply

Thank you for your coming here in site, we hope the article above will help you to know more about your eletronic circuit design software and other. Please comment here when you want to share and other. Thank you.


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