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#1
March 15th 12, 07:21 PM
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NE612 beginner
I am very new in electronic circuits and I am using NE612 as a frequency mixer. In the datasheet a sample circuit for this purpose is shown. Nevertheless, it is for 45 MHz. There are some capacitors and inducers shown in the circuit diagram. However, I need to use some other frequencies as well. I was wondering if the values of capacitance and inductance which are shown in the datasheet should be changed for frequencies other than 45 MHz. I am not using it in radio applications, so I only need to have the IF produced in the output. I am really looking forward to hearing some help. If I have to change them, how should I measure them?
Thanks a lot for all helps Best regards Mohsen Erfanzadeh |
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#2
March 18th 12, 11:53 AM
posted to rec.radio.amateur.homebrew
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NE612 beginner
On Thursday, March 15, 2012 3:21:58 PM UTC-4, Mohsenerfan wrote:
I am very new in electronic circuits and I am using NE612 as a frequency mixer. In the datasheet a sample circuit for this purpose is shown. Nevertheless, it is for 45 MHz. There are some capacitors and inducers shown in the circuit diagram. However, I need to use some other frequencies as well. I was wondering if the values of capacitance and inductance which are shown in the datasheet should be changed for frequencies other than 45 MHz. I am not using it in radio applications, so I only need to have the IF produced in the output. I am really looking forward to hearing some help. If I have to change them, how should I measure them? Thanks a lot for all helps Best regards Mohsen Erfanzadeh -- Mohsenerfan I suggest you refer to the application notes for the device. This will probably be your best source of information. Jimmie |
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#3
March 18th 12, 02:07 PM
posted to rec.radio.amateur.homebrew
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NE612 beginner
On 03/18/2012 04:53 AM, JIMMIE wrote:
On Thursday, March 15, 2012 3:21:58 PM UTC-4, Mohsenerfan wrote: I am very new in electronic circuits and I am using NE612 as a frequency mixer. In the datasheet a sample circuit for this purpose is shown. Nevertheless, it is for 45 MHz. There are some capacitors and inducers shown in the circuit diagram. However, I need to use some other frequencies as well. I was wondering if the values of capacitance and inductance which are shown in the datasheet should be changed for frequencies other than 45 MHz. I am not using it in radio applications, so I only need to have the IF produced in the output. I am really looking forward to hearing some help. If I have to change them, how should I measure them? Thanks a lot for all helps Best regards Mohsen Erfanzadeh -- Mohsenerfan I suggest you refer to the application notes for the device. This will probably be your best source of information. Jimmie Resonance is when X [sub] L = X [sub] C The Smith Chart leaps to mind as well. |
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#4
March 18th 12, 05:54 PM
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Thanks a lot Jimmie, I am exactly trying to learn what I have to do with. I suppose I should learn more about LC filters and oscillator stabilizers. Am I right?
Thanks again. |
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#5
March 19th 12, 10:56 PM
posted to rec.radio.amateur.homebrew
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NE612 beginner
1
F = -------------- 2*PI*(L*C) |
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#6
March 20th 12, 12:13 AM
posted to rec.radio.amateur.homebrew
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NE612 beginner
On 3-19-2012 22:56, Angelos Epithemiou wrote:
1 F = -------------- 2*PI*(L*C) Actually, it's the square root of (L*C) in the denominator of the above... |
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