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Posts tagged vhf receiver

RF circuits using MAX2633

RF circuits using MAX2633 The only external components required for RF circuits is the MAX2633. VHF RF amplifier input and output blocking capacitors, C1 and C3, and a VCC bypass capacitor, C2. RF circuits is very simple but very useful for your radio facilities.

Making 300Watt Inverter DC 24V to AC 220V circuit diagram

Making 300Watt Inverter DC 24V to AC 220V circuit diagram

2N3055 MJ2955 Schema and Layout for PA

2N3055  MJ2955 Schema and Layout for Audio

15W Audio Amplifier Circuit using STK4301

15W Audio Amplifier Circuit using STK4301

Make Wireless portable with CA3140,4069,4098

Parts: R1,R2,R19_______1K 1/4W R3-R6,R13,R17_100K 1/4W R7,R15__________1M 1/4W R8_____________50K 1/2W R9____________470R 1/4W R10___________470K 1/4W R11___________100K 1/2W R12___________220K 1/4W R14,R16________68K 1/4W R18____________22K 1/4W R20___________150R 1/4W C1,C7_________100µF 25V C2,C3_________330nF 63V C4-C6___________4µ7 25V D1,D5______Red LEDs D2,D3________1N4148 75V D4________BZX79C7V5 7.5V 500mW IC1__________CA3140 or TL061 IC2____________4069 IC3____________4098 or 4528 Q1,Q2_________BC238 25V 100mA NPN L1_____________10mH miniature Inductor BZ1___________sounder (incorporating 3KHz oscillator)

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