THE FULL WAVE BRIDGE RECTIFIERTHE FULL WAVE BRIDGE RECTIFIER WITH OPERATIONAL AMPLIFIER WITH OPERATIONAL AMPLIFIER

STUDENT GROUP:

2. LÊ HỒNG NAM

1. NGUYẾN ĐỨC MINH (20081736)

3. TRẦN ANH QUỐC

4.NGUYỄN VIỆT NINH

5. PHẠM VĂN HÙNG

MAIN PARTS:MAIN PARTS:

I. Structure of the circuit.

II. Theory related.

III. Simulation.

I. STRUCTUREI. STRUCTURE

FW Bridge : D1, D2, D3, D4.

Capacitor : C1

Resistor : R1, R2, R3.

Ideal OP Amplifier : U1.

Signal Generation: V1.

I. STRUCTUREI. STRUCTURE

Details about the circuit:

II. THEORY RELATED.II. THEORY RELATED.

Use application of bridge diode and amplifier:

The ripple factor ( r)The OpAmp gain ( K)

RECTIFIER FILTER AMPLIFIERSINUSOILDAL

SIGNAL

III. SIMULATIONIII. SIMULATION

1. Full-wave rectified bridge.

2. RC- Filter circuit.

3. Amplifier circuit.

4. Simulate on Circuit Maker.

5. Check solution.

1. Full-wave rectified bridge.1. Full-wave rectified bridge.

Voltage at point c and e is sinusoildal but out of phase.

c

e

2. RC- Filter circuit.2. RC- Filter circuit.

Voltage at point a : Diagram rippled with the amplitude is Vin- 2Vd.

3. Amplifier circuit.3. Amplifier circuit.

K= 1+R3/R2=4

Non-inverting OP Amp => Uout is positive

4. Simulate on Circuit Maker.4. Simulate on Circuit Maker.

5. 5. Check solution.Check solution.

Value of devices :

R1=R2=R=1k ; R3=3k .

C1=250uF; Vd = 0.7v .

|Vs|= 12v; f=50Hz .

5. 5. Check solution.Check solution.

U in_m = 12- 2 Vb = 12-2.0.7= 10.6

K= 4 so Udc_out = 10.42*4= 41.68 (V)r= 0.1 * 4= 0.4