0 5 WATT MINI AMPLIFIER TDA1015T ELECTRONIC DIAGRAM

0,5 WATT MINI AMPLIFIER TDA1015T ELECTRONIC DIAGRAM

Chances are youll want this amplifier portable. Batteries do the trick fine, but you wont get much power out of a couple of 1.5V cells. Unfortunately the size of a decent amount of battery power will mean that the overall size of this amp will be much bigger and for that there are more benefits to be had using a device like the TDA7052 or TDA2822 for stereo.

Quick ref data of TDA1015T Chip

•     Supply voltage range: 3,6 to 12 V
•     Peak output current: 1 A
•     Output power: 0,5 W
•     Voltage gain power amplifier: 29 dB
•     Voltage gain preamplifier: 23 dB
•     Total quiescent current: 22 mA
•     Operating ambient temperature range: -25 to +150 °C
•     Storage temperature range: -55 to + 150 °C

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AUDIO FREQUENCY LIGHT MODULATOR ELECTRONIC DIAGRAM

AUDIO FREQUENCY LIGHT MODULATOR ELECTRONIC DIAGRAM

Light has function to replace cable from audio source to speaker. Transformer X2 is utilized to lock the audio signal. VR1 works as the amplitudo modulator from the T1 signal output.

Parts list :

•     Resistor R1:  47k ohm
•     Resistor R2 : 22k ohm
•     Resistor R3 : 220 ohm
•     Diode D1-D7 : 1N4001
•     VR1 : 1k ohm
•     Polar capacitor C1 : 470 uF/25V
•     Polar capacitor C2 : 1 uF
•     Capacitor C3 : 0.1 uF
•     Transistor T1-T2 : BC148
•     Transformer X1 : 220 V AC/0-12V AC
•     X2 : AF output
•     Transistor SCR1-SCR2 : BA654

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KA2107 Tone control electronic circuit project

A very simple tone control electronic circuit project can be designed using the KA2107 integrated circuit manufactured by Samsung Electronics . This tone control electronic circuit project is very simple requiring few external electronic parts . As you can see in circuit diagram the KA2107 tone control circuit project is designed for stereo application and it has some additional functions like volume control and balance control between channels . Adjusting the 10k potentiometers (bass and tremble) you will modify the high and low output signal frequency .

This electronic circuit project must be powered from a simple 12 volt Dc power supply circuit , but it works fine also with a 8 volt or 14 volt DC power circuit .

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Simple Electronic Security Door Key Circuit Diagram

A different Electronic Security Door Key Circuit Diagram of electronic lock very simple, one and does not need a lot of materials in order to it is manufactured. The right keys of code should be stepped with the right line, so that is activated the optocupler IC2. If from error is stepped switch that does not belong in the combination, then the lock is trapped. In order to we restore the regular operation of lock, it should we press switches S1 or S12. 

Read : Heat Detector Alarm using UM3561 

 Electronic Security Door Key Circuit Diagram

Switch S1 makes Reset of lock externally and the S12 internally, the door. The Code the circuit as he is connected it is 147 and it can change, very easily, changing the connections in the switches of keyboard. The optocupler IC2, can drive any exterior circuit as Relay etc, ensuring simultaneously electric isolation the two circuits. The circuit can be also supplied from a battery 9V.

Read : Radio Wave Alarm

Part List

    R1-7-9=1Kohm
    R2-3-4-5=100Kohm
    R6 =10Kohm
    R9 =47Kohm
    IC1 = 4066
    IC2 =4N25
    Q1-2=BC550
    S1...11=Push button sw or keyboard
    S12=Push button normal closed
    All resistors is 1/4W 5%

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