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Posts tagged 双刀双掷,

Schematic diagram for a broadband QRP SWR metering circuit and SSB TRANSCEIVER 80M / 40M boster filter IF Radio

A schematic diagram for a broadband QRP SWR metering circuit for use in a QRP antenna tuner. One could simply hold a momentary DPDT switch down and watch the LED while tuning the capacitors of the antenna tuner for minimum or zero light.

Audio Jammer – Noise generator for detector audio circuit

Audio Jammer – Noise generator for detector audio circuit Audio Jammer – Noise generator for detector audio circuit R1,R4 ………. 1K 0,5W R2,R3 ………. 39K 0,5W C1 …………. 5000pF/50V C2,C3 ………. 3000pF/50V FCS9012 ……. PNP FCS9012 ……. PNP

Make Electronics Schematic Diagram MJR7-Mk3 Mosfet Audio Power Amplifier 70W output power at 60v

MJR7-Mk3 Mosfet Audio Power Amplifier 70W output power at 60v The Electronics Schematic Diagram MJR7-Mk3 Mosfet MJR6 page includes distortion extracted using the nulling method with a speaker load and a music signal to demonstrate that these designs have no audible distortion in normal use. The MJR7 has even lower distortion, for example the 19kHz […]

What softwares can be used to design PCB’s ?

asicsrocks2120 asked: What softwares can be used to design PCB’S ? I have used Pspice in the past in college and I thought they could be used to design Printed Circuit Boards . Is that true ? I see that Autocad is mostly for Mechanical designs . If so are there a lot of softwares […]

Bluetooth cell phone

Bluetooth cellular phone circuit GSM SMS Controller circuit using Bluetooth cellular phone and Bt serial Bluetooth cell phone serial and GSM SMS Controller circuit using PIC16LF875

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