Wiring Diagram

You can use either moving coil microphone or condenser microphone for this circuit. Make sure the electrolytic capacitor is rated for 16 volt or more. The potentiometer shown in the schematic diagram is used to adjust the gain of the pre-amplification. You can adjust this potentiometer to get a proper sound level where the relay would be activated.

List Componet Of Disco Lamp circuit

    R1 : 22k 1/4 watt resistor
    R2 : 4K7 watt resistor
    R3 : 2K2 watt resistor
    R4,R8 : 10K watt resistor
    R5 : 33K watt resistor
    R6 : 56K watt resistor
    R7 : 1M watt resistor
    Potensio: 50K
    C1 : 470uf/35V electrolytic capacitor
    C2 : 22n ceramic capacitor
    C3 : 100n ceramic capacitor
    C4 : 1Uf/50V electrolyticcapacitor
    D1 - D5 : 1N4007
    D6 : Zener 5.1v
    D7 : 1N4148
    IC : CD 4069
    SCR : FIR 3D
    Mic : Mic Condensor ider I used.

12VDC FLUORESCENT LAMP DRIVER SCHEMATIC DIAGRAM

Whenever there is a need for battery-powered lighting, like for camping, solar powered cottages, cars, boats, planes, or emergency purposes, fluorescent lamps have a great appeal. Firstly, they are very much more efficient than glow lamps, so they produce much more light for less power consumption. Secondly, their light color stays constant while the battery runs down.

In this article I will offer driver circuit for 12 V/5Watt fluorescent lamp, this circuit used a normal 220 to 10V stepdown transformer in reverse to step 12V to about 240V to drive a lamp without the need to warm the filaments.
Rangkaian 12VDC Fluorescent Lamp DriverSkema Rangkaian 12VDC Fluorescent Lamp Driver

The IC1 TLC 555 is wired as an astable multivibrator for producing the necessary oscillations.The MOSFET Q1 is used to amplify the oscillations produced by the IC1.The out put of MOSFET is connected to the primary of the step up transformer to produce a ~240 V AC for driving the florescent lamp.

List Component:

    * C1 100uf /25V Electrolytic Capacitor
    * C2,C3 100nf Ceramic Capacitor
    * C4 100nf /1KV Ceramic Capacitor
    * R1 1K Resistor
    * R2 2.7K Resistor
    * Q1 IRF510 MOSFET
    * U1 TLC555 Timer IC
    * T1 300mA, 10V/220v Transformer
    * LAMP 5W Fluorescent Lamp
    * MISC Board, Wire, Heatsink For Q1