Wiring Diagram

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.

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

DC to DC converter can provide up to 24V from a 12V volt DC. It can be used to run radios, small lights, relays, horns and other 24V accessories from a 12V vehicle with a maximum draw of about 800mA. It can be used to charge one 12V battery from another, or step up the voltage just enough to provide necessary overhead for a 12V linear regulator.