|FlashWebHost.com | Resources | Ham Radio Circuits | Site Promote ||
|7 MHz Transceiver||Advice for beginers||Winding Coils||Test Equipments|
|Power Supply||Variable Frequency Oscillator||Carrier Oscillator||Audio Amplifier|
|Mic Amplifier||Receiver Front End||MC1496||Ladder filter|
|IF Amplifier||Linear Amplifier||Power Amplifier||Block Diagram|
|Circuit - Part 1||Circuit - Part 2||Antenna||Conclusion|
The microphone amplifier / modulator is build around LM324 which is a quad op amplifier provides enough quality amplification to voice picked up by the condenser microphone.
First and Second Mixer's are build using popular Double balanced modulator IC MC1496.
The AF Amplifier circuit used OP amplifier LM741 as pre amplifier and LM386 as power amplifier.
Most of the signal switching is done though Diodes. Relays are used to switch veriable frequency oscillator and beat frequency oscillator.
|Website designed by Yujin Boby, FlashWebHost.com. All rights reserved.|