DVD Signals RF Modulator

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DVD Signals RF Modulator ~ DVD Signals RF Modulator

DVD Signals RF modulator circuit which also can be used as a RF modulator.
The brightness can adjusted by trimming the P1, P2 control the contrast of video signal. The circuit output is RF modulated and can be receive in VHF band.

Parts
Resistor:
R1_____________33K
R2_____________22K
R3,R9__________470
R4_____________1K
R5_____________220
R6_____________270
R7_____________150
R8_____________6K8
R10,R11________100
R12____________1K5
R13____________68

Capacitor:
C1,C6__________22p
C2_____________120p
C3,C4,C5_______8p2
C7_____________33p
Diode:
D1_____________1N4148
Potentiometer:
P1_____________2K5
P2_____________1K
Cristal:
X1_____________27MHz
Inductor:
L1_____________1uH
Transistor:
T1,T2__________BF494
T3_____________BFY90

BFY90 – BF494 FEATURES
• Low current (max. 30 mA)
• Low voltage (max. 20 V).
APPLICATIONS
• HF applications in radio and television receivers
• FM tuners
• Low noise AM mixer-oscillators
• IF amplifiers in AM/FM receivers.
DESCRIPTION
NPN medium frequency transistor in a TO-92; SOT54 plastic package.

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DVD Signals RF Modulator

This DVD Signals RF Modulator post content written by TB in November 12th, 2011. Contain total 1 diagrams, such as dvd signals rf modulator , fell free to browse each diagram from this post content.

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