High Frequency Mixers and Ultrasonic Amplifiers

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pramodspark Participant Join Date: Jan 2009 Location: Trivandrum,India Posts: 3	High Frequency Mixers and Ultrasonic Amplifiers 01/27/2009 10:00 PM
	any one can send me circuit diagrams of 1. a high frequency mixer 2. and an ultra sonic amplifier i am doing a project on "ultra sound " and if get the circuit diagrams, it ll be a great help for me.. my e mail id is pramodspark@yahoo.com __________________ ....Sankar....
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Randall Guru Join Date: Aug 2005 Location: Hemel Hempstead, UK Posts: 5826 Good Answers: 322	#1 Re: High Frequency Mixers and Ultrasonic Amplifiers 01/29/2009 5:15 AM
	Disclaimer/warning:- I know nothing about ultrasound (and, there are lots of far better electronic engineers on this forum but no one else seems to have replied) I would have thought that ultrasonic stuff would not normally be considered high frequency. This should get you going:- No power supply decoupling caps shown! The 741 Op-Amp should be OK for U1, but, you will need to choose a suitable Op-Amp and interface output to match your transducer. The mixer stage has no gain, and, I've set the gain of the amplifier stage to X10: again you need to choose to match your transducer. __________________ If you spend all your time looking for people and things to complain about: trust me, you will find plenty to complain about.
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silvCrow Guru Join Date: May 2007 Location: Aloha or Posts: 659 Good Answers: 19	#2 In reply to #1 Re: High Frequency Mixers and Ultrasonic Amplifiers 01/29/2009 11:41 AM
	Randell, I think most of us assumed this was someones home work. __________________ Closed biased minds are utterly impervious to any factual evidence which contradicts their beliefs
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Randall Guru Join Date: Aug 2005 Location: Hemel Hempstead, UK Posts: 5826 Good Answers: 322	#3 In reply to #2 Re: High Frequency Mixers and Ultrasonic Amplifiers 01/30/2009 2:31 AM
	Then: I've waisted my time. But, I won't have told him anything he didn't already get told in class, so: no harm done? __________________ If you spend all your time looking for people and things to complain about: trust me, you will find plenty to complain about.
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Sciesis2 Guru Join Date: Oct 2006 Location: Vancouver (not BC) Washington (not DC) US of A Posts: 1261 Good Answers: 12	#4 In reply to #3 Re: High Frequency Mixers and Ultrasonic Amplifiers 01/30/2009 7:43 PM
	The ultrasound my wife uses (in medicine) typically runs at 4 MHz more or less. I don't think a 741 would cut it. Bill
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Anonymous Poster	#5 In reply to #1 Re: High Frequency Mixers and Ultrasonic Amplifiers 02/02/2009 9:55 AM
	thank you for the circuit diagram... hmm as some one said this is not my 'Home work" or any thing like that.. as i said i am doing a project, so i wanted some one to discuss with so i put this thread .. hmm any way thank you for your support
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Randall Guru Join Date: Aug 2005 Location: Hemel Hempstead, UK Posts: 5826 Good Answers: 322	#6 In reply to #5 Re: High Frequency Mixers and Ultrasonic Amplifiers 02/03/2009 3:14 AM
	It might be worth starting a new thread. Post a link to it from this one, so that you get silvCrow and Sciesis2 on board; include more details: like the frequency your interested in; possibly the transducer(s?) you're going to use, and, anything else which may be relevant. __________________ If you spend all your time looking for people and things to complain about: trust me, you will find plenty to complain about.
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Sciesis2 Guru Join Date: Oct 2006 Location: Vancouver (not BC) Washington (not DC) US of A Posts: 1261 Good Answers: 12	#7 In reply to #6 Re: High Frequency Mixers and Ultrasonic Amplifiers 02/03/2009 3:30 AM
	I personally am quite a dummy on the subject, but I can ask the boss (wife) and see what she has on it. If so, I will respond here. Bill
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cnpower Guru Join Date: Sep 2006 Location: CHINA Posts: 2945 Good Answers: 14	#8 Re: High Frequency Mixers and Ultrasonic Amplifiers 02/03/2009 9:19 AM
	I dont know if you are a lazebone. because you cannt make clear many issues like how much frequency? what is you required middle frequency from mixer? how much power is the aplifier? distortion, and band etc.... ultrasonic frquency has very wide range from 20KHz -- xGHz, we general use can be up to 50--100Mhz etc. what s your transductor, differnt transductor , different amplifier design. os you should make your issue completement.
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pramodspark Participant Join Date: Jan 2009 Location: Trivandrum,India Posts: 3	#9 In reply to #8 Re: High Frequency Mixers and Ultrasonic Amplifiers 02/03/2009 9:39 AM
	hmmmmmmmmmmm i've started a new thread, with more details ..... if your are interested... look into it.. http://cr4.globalspec.com/thread/32816#newcomments __________________ ....Sankar....
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Anonymous Poster (1); cnpower (1); pramodspark (1); Randall (3); Sciesis2 (2); silvCrow (1)

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