Jul 27

Direct Diode Detector Radio Receiver

Diode Detector Radio Receiver-schematic-diagram

Parts List Capacitor : C1 …………………………. 33pF C2 ………………………… 200pF Variable Capacitor : VC ………………………… 200pF Diode : D1,D2 …………………….. 1N 60    

Jul 27

TRX6221 Stereo Graphic Equalizer

Stereo Graphic Equaliser1-schematic-diagram

  Parts List Resistor : R1,R3,R5,R7,R9,R11 ……………………. 470 R13,R15,R17,R19 ……………………….. 470 R101,R103,R105 ………………………… 470 R107,R109,R111 ………………………….470 R113,R115,R117,R119 ………………….. 470 R2,R4,R6,R8,R10,R12 ………………… 470K R14,R16,R18,R20 ……………………… 470K R102,R104,R106 ………………………. 470K R108,R110,R12 …………………………. 470K R114,R116,R118,R120 ………………… 470K R21,R121,R22,R122 …………………… 100K R23,R123,R24,R124 ……………………. 10K R25,R125 …………………………………… 1K R26,R126 …………………………………… 1M R27,R127,R28,R128 …………………….. 330 R29 …………………………………………. 3,9K R30 …………………………………………. 3,3K …

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Jul 24

DC 6-9V Mini Police Alarm

Mini Police Alarm-schematic-diagram

Parts List Resistor : R1 ………………………….. 180 R2,R3 ……………………… 15K R5 ………………………….. 3K3 R6 ………………………….. 10K R7 …………………………. 220K R8 …………………………… 1K2 R9 ……………………………. 150 Capacitor : C1,C2,C3 ………………….. 10uF C4 ………………………… 0,05uF C5 …………………………. 100uF C6 …………………………… 47uF Diode : D1,D2 …………………. 1N 4002 Transistor : TR1,TR2,TR3 ………….. FCS 9014 TR4 ……………………… FCS 9012 …

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Jul 24

8W Police Alarm/Sirene

Police Alarm2-schematic-diagram

Parts List Resistor : R1 ……………………………… 2K2 R2 ……………………………… 27k R3 ……………………………… 470 R4 ……………………………… 22K R5 ………………………………. 120 R6,R10 ………………………… 8K2 R7 ……………………………… 3K3 R8 ……………………………….. 1K R9 ……………………………… 4K7 R11 …………………………….. 220 R12,R13 ………………………. 18K R14 ……………………………… 10 Variable Resistor : VR1 ………………………….. 100K VR2.VR3 ……………………….. 2K Capacitor : C1 ………………………… 22uF/10V C2 …

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Jul 24

Police Alarm with Flash Lamp/Light Alert

Police Alarm-schematic-diagram

Parts List Resistor : R1 …………………………………… 4K7 R2 …………………………………… 10K R3 …………………………………. 100K R4,R11 ……………………………… 12K R5 …………………………………… 2K2 R6 ………………………………….. 220K R7 ……………………………………. 22K R8 ……………………………………. 82K R9 ……………………………………. 1M5 R10 …………………………………… 100 Variable Resistor : VR1 ………………………………….. 100K Capacitor : C1 ………………………………. 47uF/10V C2 ……………………………… 2,2uF/10V C3,C4,C5 ……………………… 0,1uF/50V C6 ………………………………. 22uF/10V C7 …

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