Comments on: Simple Radio Circuit using Op Amp http://www.circuitstoday.com/simple-opamp-radio An Authentic Resource on Electronics Wed, 08 Feb 2012 02:09:28 +0000 hourly 1 http://wordpress.org/?v= By: Seetharaman http://www.circuitstoday.com/simple-opamp-radio#comment-40368 Seetharaman Mon, 16 May 2011 17:12:25 +0000 http://www.circuitstoday.com/?p=80#comment-40368 Hi Adrian you are correct. this pin number is for MC1458. dual op-amp. IC Pin 2,3,5,6, should be at 4.5 volts. across also you should get 4.5 volt ensure R3 R2 junction is connected to Pin 3 of IC. Hi Adrian you are correct. this pin number is for MC1458. dual op-amp. IC Pin 2,3,5,6, should be at 4.5 volts. across also you should get 4.5 volt ensure R3 R2 junction is connected to Pin 3 of IC.

]]> By: ADrian http://www.circuitstoday.com/simple-opamp-radio#comment-39803 ADrian Sun, 15 May 2011 07:00:05 +0000 http://www.circuitstoday.com/?p=80#comment-39803 I started working on this thing for a week now for an electrical engineering project i spent a fair bit of money on it too, firstly they dont make germanium diodes any more so i used a silicon one, as well as finding the full range variable capacitor, the wiring diagram for the ic is incorrect, pin 4 is actually pin 11 and input Vcc to IC is pin 4 and not pin 8 as stated, after C2 i have no voltage traveling to that end of the circuit (antenna side), headphones seem to make a little noise or pop on applying voltage. I like this project but it doesnt seem to work I started working on this thing for a week now for an electrical engineering project i spent a fair bit of money on it too,

firstly they dont make germanium diodes any more so i used a silicon one, as well as finding the full range variable capacitor,

the wiring diagram for the ic is incorrect, pin 4 is actually pin 11 and input Vcc to IC is pin 4 and not pin 8 as stated,

after C2 i have no voltage traveling to that end of the circuit (antenna side), headphones seem to make a little noise or pop on applying voltage.

I like this project but it doesnt seem to work

]]> By: sipra http://www.circuitstoday.com/simple-opamp-radio#comment-9847 sipra Wed, 03 Nov 2010 03:23:24 +0000 http://www.circuitstoday.com/?p=80#comment-9847 i am doing a project on it!!!!!!!can you provide me the slides in ppt format of the simple opamp radio,within 4.11.2010,,,plzzzzzzzzz Read more: http://www.circuitstoday.com/simple-opamp-radio/comment-page-1#comment-9846#ixzz14BbJ3YMA i am doing a project on it!!!!!!!can you provide me the slides in ppt format of the simple opamp radio,within 4.11.2010,,,plzzzzzzzzz

Read more: http://www.circuitstoday.com/simple-opamp-radio/comment-page-1#comment-9846#ixzz14BbJ3YMA

]]> By: sipra-i want the ppt format of simple opamp,soon plzzzzzz http://www.circuitstoday.com/simple-opamp-radio#comment-9846 sipra-i want the ppt format of simple opamp,soon plzzzzzz Wed, 03 Nov 2010 03:22:26 +0000 http://www.circuitstoday.com/?p=80#comment-9846 i am doing a project on it!!!!!!!can you provide me the slides in ppt format of the simple opamp radio,within 4.11.2010,,,plzzzzzzzzz i am doing a project on it!!!!!!!can you provide me the slides in ppt format of the simple opamp radio,within 4.11.2010,,,plzzzzzzzzz

]]> By: seon http://www.circuitstoday.com/simple-opamp-radio#comment-3920 seon Mon, 05 Oct 2009 17:33:34 +0000 http://www.circuitstoday.com/?p=80#comment-3920 will it work? will it work?

]]> By: admin http://www.circuitstoday.com/simple-opamp-radio#comment-2493 admin Thu, 09 Apr 2009 16:55:50 +0000 http://www.circuitstoday.com/?p=80#comment-2493 circuit is there. just click to enlarge. circuit is there. just click to enlarge.

]]> By: MIN MAINO http://www.circuitstoday.com/simple-opamp-radio#comment-2489 MIN MAINO Thu, 09 Apr 2009 03:38:38 +0000 http://www.circuitstoday.com/?p=80#comment-2489 I need the cicuit giagram. I need the cicuit giagram.

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