Comments on: AM Transmitter circuit http://www.circuitstoday.com/am-transmitter-circuit An Authentic Resource on Electronics Wed, 08 Feb 2012 02:09:28 +0000 hourly 1 http://wordpress.org/?v= By: Navratna http://www.circuitstoday.com/am-transmitter-circuit#comment-78432 Navratna Fri, 27 Jan 2012 11:26:03 +0000 http://www.circuitstoday.com/?p=181#comment-78432 This circuit is not working, i hav used 470 pf instead of 500pf plz help. This circuit is not working, i hav used 470 pf instead of 500pf plz help.

]]> By: duedeath http://www.circuitstoday.com/am-transmitter-circuit#comment-67442 duedeath Mon, 21 Nov 2011 05:32:24 +0000 http://www.circuitstoday.com/?p=181#comment-67442 heY! can i have an AM transmitter design? i'm badly neede it.. thanks :) heY! can i have an AM transmitter design? i’m badly neede it.. thanks :)

]]> By: jose http://www.circuitstoday.com/am-transmitter-circuit#comment-62533 jose Sun, 04 Sep 2011 07:36:47 +0000 http://www.circuitstoday.com/?p=181#comment-62533 how do we make a 200microhenry??how many tuns?? and what core?? is it ok to change the 500pF to 40pF??? how do we make a 200microhenry??how many tuns?? and what core??
is it ok to change the 500pF to 40pF???

]]> By: komal http://www.circuitstoday.com/am-transmitter-circuit#comment-41365 komal Thu, 19 May 2011 06:05:53 +0000 http://www.circuitstoday.com/?p=181#comment-41365 Is this the perfect,simple & suitable circuits for am transmitter? Is this the perfect,simple & suitable circuits for am transmitter?

]]> By: dan12 http://www.circuitstoday.com/am-transmitter-circuit#comment-39529 dan12 Sat, 14 May 2011 14:49:51 +0000 http://www.circuitstoday.com/?p=181#comment-39529 Plz, tell me how the amplified signal from Q1 and carrier signal from tank circuit could be modulated by Q2. I can't understand the physical principle. Plz, tell me how the amplified signal from Q1 and carrier signal from tank circuit could be modulated by Q2. I can’t understand the physical principle.

]]> By: EL http://www.circuitstoday.com/am-transmitter-circuit#comment-38686 EL Thu, 12 May 2011 13:51:27 +0000 http://www.circuitstoday.com/?p=181#comment-38686 I just simulated this circuit using PSPICE then I couldn’t find clean amplitude modulated signal. I used Vsin (Offset = 0, amplitude = 1mV, Frequency = 1kHz) rather than cond mic and I set the 4.7k potentiometer parameter (set = 0.5). I didn’t connect the anntena and just connect voltage marker to that node. other setting is identical to the diagram. The simulation result was distorted sine signal (I couldn’t find out any carrier frequency) Is there any problem I did? I just simulated this circuit using PSPICE

then I couldn’t find clean amplitude modulated signal.

I used Vsin (Offset = 0, amplitude = 1mV, Frequency = 1kHz) rather than cond mic

and I set the 4.7k potentiometer parameter (set = 0.5).

I didn’t connect the anntena and just connect voltage marker to that node. other setting is identical to the diagram.

The simulation result was distorted sine signal (I couldn’t find out any carrier frequency)

Is there any problem I did?

]]> By: amanuel http://www.circuitstoday.com/am-transmitter-circuit#comment-38290 amanuel Wed, 11 May 2011 18:41:35 +0000 http://www.circuitstoday.com/?p=181#comment-38290 Thank you sir,But How the potentiometer works with the AM transmitter!!! Thank you sir,But How the potentiometer works with the AM transmitter!!!

]]> By: Seetharaman http://www.circuitstoday.com/am-transmitter-circuit#comment-38097 Seetharaman Wed, 11 May 2011 09:09:19 +0000 http://www.circuitstoday.com/?p=181#comment-38097 Hi Azim if the supply voltage is 12volts DC ensure all capacitors are rated for 16 volts or more on the safe side. This is the simple thumb rule. Hi Azim if the supply voltage is 12volts DC ensure all capacitors are rated for 16 volts or more on the safe side. This is the simple thumb rule.

]]> By: Azim http://www.circuitstoday.com/am-transmitter-circuit#comment-37837 Azim Tue, 10 May 2011 18:46:27 +0000 http://www.circuitstoday.com/?p=181#comment-37837 Thank you Sir, But I Tell How I Understand The capacitors Voltage to The Circuit Diagram Where Not given The Voltage(Ex:C1: 2.2uF).Please Tell Me Any Website or PDF File Which is Help Me. Thank you Sir, But I Tell How I Understand The capacitors Voltage to The Circuit Diagram Where Not given The Voltage(Ex:C1: 2.2uF).Please Tell Me Any Website or PDF File Which is Help Me.

]]> By: Seetharaman http://www.circuitstoday.com/am-transmitter-circuit#comment-37721 Seetharaman Tue, 10 May 2011 11:46:46 +0000 http://www.circuitstoday.com/?p=181#comment-37721 Hi Azim all capacitors are to be rated for 12 volts or higher. Capacitor voltage will be written on the capacitor itself. if not with colour code or any alphabet refer to manufacturers catalog. Hi Azim all capacitors are to be rated for 12 volts or higher. Capacitor voltage will be written on the capacitor itself. if not with colour code or any alphabet refer to manufacturers catalog.

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