AC-DC rectifier bridge circuit
Posted by: ROSELJR
on
AC-DC rectifier bridge circuit It is necessary to measure good and bad and distinguish between AC and DC. Excuse me: When measuring with a digital multimeter, it is first adjusted to the diode gear. Is it the on-off gear and the buzzer will sound? ? ? There are four pins. The teacher said that the AC is forward and reverse; DC is forward and reverse. Anyway, just one pass is enough? Isn't the diode file a diode and then a symbol that makes a sound?
Good day to you
A bridge rectifier consists of four diodes in a bridge configuration as seen in the file attached. The AC nodes are the ones that connects the anode of one diode to the cathode of another. For example, node A is an AC node because it connects the cathode of D2 to the anode of D1. The DC nodes on the other hand are nodes that connect two anodes together or two cathodes together. For example, node D is a DC node because it connects the cathode of D1 to the cathode of D4. All diodes must be in good condition in order for the full rectification to function.
Please disconnect the circuit from any load or power source before performing the tests.
Forward Bias Test
1. Set multimeter to diode gear
2. Place positive probe on anode of D1 (node A)
3. Place negative probe on cathode of D1 (node D)
4. Multimeter should beep and display voltage reading of 0.5 to 0.8 volts. This is the forward voltage drop
5. Repeat for D2, D3, and D4
Reverse Bias Test
1. Set multimeter to diode gear
2. Place positive probe on cathode of D1 (node D)
3. Place negative probe on anode of D1 (node A)
4. Multimeter should not beep and display OL
5. Repeat for D2, D3, and D4
If you have any further questions please feel free to reply to this thread.
Have a nice day!