Skema Pemancar Tv

The following is a series of simple TV transmitter using negative using sound modulation and PAL video modulation. This is suitable for countries using TV systems B and G.

Skema rangkaian pemancar TV|Video sederhana
Note:
This circuit will be illegal in some countries

The frequency of the transmitter lies within VHF and VLF range on the TV channel, however this circuit has not been tested at UHF frequencies. The modulated sound signal contains 5.5-6MHz by tuning C5. Sound modulation is FM and is compatible with UK System I sound. The transmitter however is working at VHF frequencies between 54 and 216MHz and therefore compatible only with countries using Pal System B and Pal System G.

Inductor L1 can be made by wire email (24SWG) 4 convolution with 6mm diameter and T1 can be used with a radio frequency transformer internal capacitor. (Can be found on the old transistor radios).

List Componet of TV transmitter circuit
R1 = 10KOhm
R2 = 47KOhm
R3 = 15KOhm
R4 = 8.2KOhm
R5 = 47KOhm
R6 = 47KOhm
Variable resistor R7 = 1Kohm
R8 = 75Ohm
C1 = 10uF / capacitor 25Volt electrolik
C2 = 0.001uf / 10nF ceramic capacitor
C3 = 100nF
C4 = 10nf
C5 = 47pF (variable capacitors)
C6 = 10nF
C7 = 10pF
C8 = 27pF
C9 = 100nF
C10 = 470uF
C11 = 10nF
C12 = 220uF / 25Volt
Q1 = BC547 NPN transistor
Q2 = BC547 NPN transistor
T1 = T1 can use the radio frequency transformer with a built in capacitor. (Can be found on the old transistor radio board).
L1 = 4 turns of copper enamel 24SWG on 6mm diameter: with a plastic core

[Joko-Electronic]

Posted by : admin 17.01

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