Search found 10 matches

by motwnbro
Mon Mar 03, 2003 6:04 am
Forum: General Discussion
Topic: Microphone to Amplifier to Speaker
Replies: 6
Views: 1338

Re: Microphone to Amplifier to Speaker

radio shack sells a clip on amplifer that is sort of a hearing aid. it is one unit with 2 mics internally. what i did was remove the mics on the circuit board then wired an external mic jack to the inputs on the c.b. use a computer headphone with a boom mic 4 hands free use. note the internal mics p...
by motwnbro
Thu Nov 14, 2002 9:48 am
Forum: General Discussion
Topic: Microphones
Replies: 9
Views: 3325

Re: Microphones

i ran across an unusual use 4 piezo speakers. i can't remember where. they make great pick ups 4 musical instuments. the xample was a rubber band banjo. the piezo is put under the bridge, connect it 2 a stereo amp. i made 1 and was amazed how well it worked. note: i used fishing line instead. thank ...
by motwnbro
Tue Oct 15, 2002 4:11 am
Forum: General Discussion
Topic: animal tracking transmitter
Replies: 13
Views: 2691

Re: animal tracking transmitter

ramsey electronics sells a model rocket tracking transmitter. good luck
by motwnbro
Fri Oct 04, 2002 5:51 am
Forum: General Discussion
Topic: as long as we are talking diodes/dead car tape deck
Replies: 2
Views: 621

as long as we are talking diodes/dead car tape deck

can a multimeter be used to test a diode on a circuit board to see if it is in working condition. this applies relates to the dead car tape deck that i posted earlier.<p>thanks for the responses on that subject. <p>martin
by motwnbro
Tue Oct 01, 2002 5:45 am
Forum: General Discussion
Topic: dead car tape deck
Replies: 1
Views: 451

dead car tape deck

i had a short in the trailer light socket which killed my radio/tape deck. no sound at all, graphics work, but no illunimination. the fuse on the back of the tape deck didn't blow. i'm wondering what happened. is there a sight/forum on audio repair that i can visit?<p>thank you<p>martin
by motwnbro
Thu Sep 12, 2002 4:08 am
Forum: General Discussion
Topic: button batteries
Replies: 5
Views: 1034

Re: button batteries

thanks 4 responding. when i went home, i experimented on an old calculator that had one cell. as it turned out, i had 2 use 2 aa batteries 2 get it up and running. on a side note using 2 d cells over powered it and all the digits lit up. hence no no.s could b entered.<p>thanks again,<p>martin
by motwnbro
Tue Sep 10, 2002 9:57 am
Forum: General Discussion
Topic: button batteries
Replies: 5
Views: 1034

button batteries

we have around our house many cheap little toys that contain button batteries. they are not worth the price of new batteries. how would i go about adapting an aa or aaa battery? i have noticed the buttons can be 1.5 volts. the current in the buttons must be fractional compared to the aa,aaa. thank y...
by motwnbro
Tue May 28, 2002 10:23 am
Forum: General Discussion
Topic: Hearing Aids
Replies: 4
Views: 1019

Re: Hearing Aids

as 2 the radio shak hearing amplifier, i found that they picked up the noise of the russeling on the shirt it was clipped 2. so what i did was remove the mics from thecircuit board installed an input jack . i use a computer mic/headphones instead. piont the mic straight out 2 hear what is in front o...