| Author | Views | Views Today | Rank | Comments |
| 109,979 | 65 |   |
63 |
| Author | Views | Views Today | Rank | Comments |
| 109,979 | 65 | |
63 |
| Here is a simple radio that is easy to build and inexpensive. In fact, you probobly have all the parts you need in your junk box. You'll be suprised at the great reception with this little set. |
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| I'm only getting one station.. wonder whats hooked up wrong, or if this radio is only supposed to get one station. But i have it hooked up to a push pull transistor audio amp n speaker i had already built on breadboard for my psp and that one station comes thru loud and clear. And i have a 4 wire loopstick plus a 6 pronged tuning cap. one sides for am the other for fm. not sure how thats all supposed to go. (Editor's notes: Place a 1K resistor in parallel with the detector.) |
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| THE PURPOSE OF GERMANIUM DOIDE IS TO DEMODULATE THE SINGNAL OBTAINED FROM LC-TANK CIRCUIT, WHICH IS BEING CHARGED BY EMF INDUCED IN ANT BY SIGNALS. GERMANIUM DIODES ARE MORE SENSITVE BCZ THEIR BARIER IS LESS(0.3V) AS THAT OF SILICON(0.7V). OP-AMP SIMPLY AMPLIFIES DEMODULATED SIGNAL FROM DIODE. | ||
| IN FIGURE THERE IS SYMBOL OF INDUCTOR & ANTENNA, BUT IN DESCRIPITION L1=LOOP STICK ANT:, SO WHATS VALUE OF INDUCTOR ITS VERY CRITICAL PLEASE SOMEBODY EXPLAIN IT, FROM T.LAMZON | ||
| PLEEEEEEZ SOMEBODY TELL ME ABOUT ANTENNA. IS IT PIECE OF WIRE OR SOME SORT OF INDUCTOR? PLEEEEEEEEEZ GIVE DESCRIPTION. THANKS IN ADVANCE. | ||
| CAN I GET A PICTURE OF THE CIRCUIT W hich HAVE BEEN BUILT ALREADY AND ALSO THE TUNING CAPACITOR AS 6LEGS AN I WAS WONDERING WHICH LEG SHOULD I USE SINCE THE CIRCUIT REQUIRES 2 LEG PLEASE HELP ME OUT | ||
| what is the purpose of the 1n34 diode? can i use any diode or do i have to use that specific one? let me know... | ||
| The purpose of the 1N34 germanium diode is to detect and recover the transmitted audio frequency modulating signal, from the radio frequency carrier signal. Try to find a 1N60 germanium diode which should perform equally as well as the 1N34. What is important here is that you use a germanium type diode as opposed to a silicon diode. The germanium diodes have greater sensitivity to lower levels of rf energy. | ||
| I couldn't find fm in description. Short wave is not always fm. I've built the circuit. Works well. You can replace the germanium diode with 1n914 or other germanium diode as well. It's demodulate the signal. The 741 is an audio amplifier. C2 used for DC decoupling. | ||
| whats the funtion of in34 diode and its equivalent i tried 2 get one bt cannot find one | ||
| we tried it. the op amp is working but no radio signal could be received. we tried it here in the Philippines.. what's wrong with it? | ||
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