In this article we will throw some light on
another important component which is important in building robots. Although this
is a very small component it plays a vital role in the working of robots. We
are talking about bridge rectifier. It is an electronic device which converts
alternating current (AC) to direct current (DC); the process of converting AC into
DC is called rectification.
A simple kind of rectifier circuit is the Half-wave rectifier. It only allows
one half of an AC waveform to pass through the load. If we want to rectify AC
power to obtain the full use of both half-cycles of the sine wave, we use
full-rectifier.
The full-wave center-tapped rectifier polarity at the load will be reversed by
the direction of diodes. In this type of diode, the other diodes are reversed
diodes and make them parallel with an existing positive-output rectifiers. These
diodes establishes the connectivity similar to a bridge. So I am going to discuss
the method of making bridge rectifiers. Components which are used to make
Breadboard, Transformer, I have taken the same which has the ratings of
12-0-12 2 Amp and input 220v. The two red wires are primary coils and
the three remaining wires are secondary wires. The other small components which
are required are LED and Capacitor. I have taken an electrolyte capacitor of ratings
100 microfarad, resistor (brown, black and red) 0 0.25 v. Now We connect the
circuit, for my personal convenience, I already drew a circuit on a paper and I
kept it in front of me so that I could easily follow it in assembly.
First take four diodes. Diodes of 1000v one amp
Bend the diodes and fit them into the breadboard. In the diode, the silver part
is N-junction and the black part is P-junction. Fit the N-junction on the
left-side.
After that take the second diode and connect it to the N-junction to the
N-junction of the previously fixed diode. Now connect the N-junction of third
diode to the P-junction of second diode.
Connect the N-junction of the fourth diode with the P-junction of first diode.
Now connect the positive side of the capacitor with the junction of first and second
diode and we have to leave its negative terminal blank.
Now take one of the resistors and connect it to the positive terminal of the
capacitor and leave the other terminal as it is. After that LED is connected to
resistor and capacitor. The positive terminal of LED is connected to the empty
terminal of the resistor and the negative terminal is connected to the empty
negative terminal of the capacitor. Now the next step to do is to
add one jumper to the negative terminal of the LED and another terminal to the
junction of the third and fourth terminal of the diodes. Now connect the transformer
to the circuit.
For this we will connect secondary wires to the circuit and then provide power
supply through mains via primary wiring. Now this is our complete bridge
rectifier. On providing supply, Led will be turned on.
