Tag Archive: Communication

Jul 27

88-108 MHz FM Wireless Microphone

FM Wireless Microphone-schematic-diagram

Parts List Resistor : R1 ……………………………….. 33K R2 ……………………………….. 150 R3 ……………………………….. 47K R4 ……………………………….. 180 Capacitor : C1 ……………………………….. 1uF C2,C6 ………………………… 2KpF C3 …………………………….. 1KpF C4,C5 ………………………… 10pF Transistor : TR1,TR2 ………………….. C 838 Other : Condenser Mic  

Jul 14

SN7473 Touch Switch

Touch Switch2-schematic-diagram

Parts List : Resistor : R1 ………………………………….. 4,7K R2,R4 ………………………………. 15K R3,R5 ……………………………… 220K R6 ………………………………….. 150K R7 ……………………………………. 470 R8,R10 ……………………………….. 1K R9 ……………………………………. 100 Variable Resistor : VR1 ………………………………….. 10K Capacitor : C1 ……………………………………. 1uF C2 ………………………………… 0,01uF C3 ………………………………….. 0,1uF C4,C5,C6 …………………………. 2,2uF C7,C8 …………………….. 1000uF/16V Transistor : TR1,—TR4 …………………. FCS9014 TR5 …

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Jul 08

LM386 Intercom

Intercom-schematic-diagram

Parts List Resistor : R1 …………………………………. 10 R2 ………………………………. 5,6K Capacitor : C1 ……………………………. 220pF C2,C5,C6 …………………… 100uF C3 ……………………………. 47KpF C4 ………………………….. 100KpF Integrated Circuit : IC1 …………………………… LM386 Transfomer : T1 …………….. Transformer  1 : 25 Other : Speaker 2″ ………………….. 8 ohm    

Jul 06

Infra Red Remote Control Receiver

Infra Red Remote Control2-schematic-diagram

Psrts List Resistor : R1 ………………………………………. 220K R2 ………………………………………. 470K R3 ………………………………………… 33K R4,R7 …………………………………… 180K R5,R9 …………………………………….. 47K R6 …………………………………………. 22K R8 ………………………………………….. 470 R10 ………………………………………… 560 R11 ……………………………………….. 6,8K Capacitor : C1 ……………………………………….. 4,7KpF C2 ………………………………………… 10KpF C3 ………………………………………… 33KpF C4 ………………………………………….. 10uF C5 ……………………………………………. 1uF C6 ………………………………………… 100uF Transistor : TR1,TR2,TR3,TR4 …………………. …

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Jul 03

MC1455 Infra Red Remote Control Transmitter

Infra Red Remote Control-schematic-diagram

Parts List Resistor : R1 ……………………….. 220K R2 …………………………… 22 Capacitor : C1 ……………………….. 1KpF C2 …………………….. 100KpF Diode : D1 ………………………… LED D2,D3 ………………. Infra Red Integrated Circuit : IC1 …………………… MC1455