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Posts tagged 调谐器

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.

Is it possible to create an “all-penetrating EYEBEAM”?

SorrY asked: just by looking at an object and querying a database it produces a list of attributes of that object in your “inside window” of the eye – that is an artificial eye transplant that associates existing attributes with defined custom attributes that you can add and delete over time – for example if […]

uPC1032H circuit

preamp mic schematic using uPC1032H R101,201,9 ………… 100 R102,202 ………….. 1K R103,203 ………….. 1K R104,204 ………….. 82 R105,205 ………….. 15O R106,206 ………….. 1K R107,207 ………….. 2K R108,208 ………….. 4K R10 ………………. 10R VR ……………….. B50K Stereo C101,201 ………….. 1nF C102,202,106,206 …… 10uF/16V C103,203,113,213 …… 22uF/16V C104,204 ………….. 39nF C105,205 ………….. 1,5nF C7,9,11 …………… 100nF C8,10,12 […]

Automatic Transfer Switch

Automatic Transfer Switch Circuit diagram Timer Automatic Switch R1 ………….. 15K ohm R2 ………….. 600 ohm R3 ………….. 4,7K ohm R4 ………….. 22K ohm R5 ………….. 68 ohm C1 ………….. X C2 ………….. 47uF – 25V C3 ………….. 0,1uF – 600V TR1-TR2 ……… 2N5306 SCR …………. 2N4444 PS ………….. Puas Switch D1 ………….. 1N – […]

Making a joule thief

Making a joule thief How to make a joule thief charger ? This is a very interesting circuit, it will drive 6 volt led from a single 1.5 volt cell. How to make a simple joule thief – Here are the schematic diagrams that are involved with the joule thief circuit A joule thief is […]

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