Jul 27

DC 4V-9V Adjustable Voltage Regulator

DC 4V-9V Regulator-schematic-diagram

  Parts List Resistor : R1,R2 …………………………. 2,2K R3 ………………………………. 15K R4 ………………………………. 22K R5 ………………………………. 10K Variable Resistor : VR1 ………………………………. 2K Capacitor : C1,C2 ………………….. 2,2uF/25V C3 ………………………. 10uF/10V Transistor : TR1,TR2,TR3 …………. FCS 9014D TR4 …………………………… BC 140 Diode : D1 ……………………………… ZD 12V  

Jul 27

RC4739 Stereo Tape Head Playback Pre-Amplifier

Stereo Tape Head Playback Amplifier-schematic-diagram

Parts List Resistor : R1,R101 ……………………………… 5M6 R2,R102 ……………………………. 180K R3,R103,R5 …………………………… 1K R105,R12 ……………………………… 1K R4,R104 ……………………………… 100 R6,R106,R11,R111 ………………….. 4K7 R7,R107 ……………………………… 2M2 R8,R108 ……………………………… 27K R9,R109 ………………………………. 150 R10,R110 …………………………….. 22K R13 …………………………………….. 1M R14 …………………………………….. 82K Variable Resistor : VR1,VR101 ………………………….. 10K Capacitor : C1,C101,C4,C104 ……………… 0,1uF/50V C2,C102 ………………………… 470pF/25V C3,C103 …

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Jul 27

MM5369 60 Hz Time Base X’tal Oscillator

60 Hz Time Base X'tal Oscillator-schematic-diagram

Parts List Resistor : R1 ………………………………. 470 R2,R3 ………………………….. 3K3 R4 …………………… 16M (3x 5M6) Capacitor : C1 ……………………………… 33pF Variable Capacitor : VC1 ……………………………. 30pF Diode : D1 ………………………….. ZD 7,5V Integrated Circuit : IC1 ………………………… MM 5369 Other : X’tal ………………………. 3,579545  

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 27

Amplitude Modulation (AM) Medium Wave (MW) Radio Receiver

Radio MW-schematic-diagram

Parts List Resistor : R1 …………………………….. 100K R2,R3 ……………………………1K5 R4 ………………………………. 470 R5 ………………………………… 10 Variable Resistor : VR1 ……………………………. A 5K Capacitor : C1 ……………………………. 0,01uF C2 ……………………………… 0,1uF C3 ………………………………… 1uF C4 ……………………………. 0,02uF C5 ……………………………. 0,05uF C6,C7 ………………………… 220uF C8 ………………………………. 10uF Variable Capacitor : VC1 ………………………….. 500pF Diode : D1,D2 ……………………… …

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