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hello
could anyone tell me how to get into electronic surveillance design field? like making electronic gadgets for the intelligence agencies,etc. i have some knowledge on this subject.is there any diploma/masters degree available on this subject? what are the job opportunities ...
tda7000 receiver
hello
please take a look at the fm receiver schematic below. i think the varicap diode is connected in the reverse. is the schematic's tuned circuit correct?please help.
hello
i have a NATIONAL PANASONIC RX-5030F tape recorder/radio. it has a dipole connector,which is an old style one. there are two pins in the connector,but they are showing continuity on my multimeter. i connected using crocodile pins,i am getting a signal even only one pin is...
mosquito racket circuit
the bat contains two dc 1.5v cells. an oscillator circuit is also present.this changes the dc into ac.then,the ac is given to a miniature step up transformer.which gives 350v or more at the output with less current.when a mosquito falls across the two teminals,it gets...
i have a small doubt.if i connect the antenna to the receiver using a 300ohm ribbon cable,won't the cable act as an antenna itself. will there be any signal loss?
japanese fm dipole antenna
hello
i am new to the transmission lines. could any one tell me how i can connect a dipole antenna to the FM radio.i mean, i want to put the antenna on the terrace. which cable(75ohm or 50ohm) should i use.
my reciever is an old NATIONAL PANASONIC TAPE...
small regen receiver
hello transistor495,
can you please tell me what value variable capacitor you used? i didn't find MPF102 ,so i want to use BF245C,like you said. i don't think i can find a quality trimmer in INDIA.can i use a variable capacitor found in the Am/Fm radios? if...
battery charger circuit by scr
hello
could some one explain me this circuit. here 12v AC voltage is directly given to the transistor collector. can a transistor work on an AC supply? please help.
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