Frequency Multiplier: Build Schematic for 78x Factor

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In summary, the conversation is about the search for a frequency multiplier with a factor of 78. The NE565 chip is mentioned as a possible option and a block diagram and datasheet are provided. The frequency to be multiplied is variable from 1Hz to 20Hz with an output range of 78Hz to 1560Hz. Bob suggests several ways to achieve this with a margin of error of +/- 2Hz.
  • #1
Truthlover
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Hi everyone, I just want to know if anyone here have a schematics to build a frequency multiplier. All I have see for the moment is multiplier with a factor of 2. I'm searching a factor 78 frequency multiplier. Also if it exist in a chip i would like to konw it to.Thanks
 
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  • #2
The first PLL / frequency multiplier chip (I think) was the NE565 chip in the early-mid 1970's. A block diagram of a NE565-based frequency multiplier is shown in
http://www.circuitstoday.com/wp-content/uploads/2009/09/NE-565-Frequency-Multiplier.jpg
In your case, the frequency divider is by 13 by 3 and last by 2. I put the divide by 2 last so that the NE565 gets a 50% duty cycle square wave. To see inside the NE565, see
http://www.alldatasheet.com/datasheet-pdf/pdf/118262/ETC/NE565N.html

Bob S
 
  • #3
What is the frequency you are trying to multiply?
 
  • #4
waht said:
What is the frequency you are trying to multiply?

it's variable from 1Hz to 20 Hz to get at the output 78Hz to 1560 Hz
 
  • #5
There are several ways to do this depending on how accurate you need it to be.
 
  • #6
I don't need a high accuracy. [tex]\pm[/tex] 2 Hz at the output is good enough for me.
 
  • #7
he's there someone here
 
  • #8
Truthlover said:
he's there someone here

What about Bob's suggestions in post #2?
 

FAQ: Frequency Multiplier: Build Schematic for 78x Factor

What is a frequency multiplier and how does it work?

A frequency multiplier is a circuit that takes an input signal and produces an output signal with a frequency that is a multiple of the input frequency. This is achieved using non-linear elements such as diodes or transistors, which generate harmonics of the input signal.

Why would someone want to build a frequency multiplier with a 78x factor?

There are many reasons why someone may want to build a frequency multiplier with a 78x factor. Some common applications include generating higher frequency signals for communication systems, producing stable clock signals for digital circuits, and converting signals for use in scientific research.

What components are needed to build a frequency multiplier with a 78x factor?

The specific components needed will depend on the design of the frequency multiplier, but generally, you will need non-linear elements such as diodes or transistors, capacitors, and resistors. You may also need a power supply and other supporting components such as amplifiers or filters.

Are there any challenges or limitations to building a frequency multiplier with such a high factor?

Yes, there are several challenges and limitations to consider when building a frequency multiplier with a 78x factor. These include managing signal distortion and noise, ensuring stability and accuracy of the output signal, and designing a circuit that can handle high frequencies and power levels.

Are there any resources available to help with building a frequency multiplier with a 78x factor?

Yes, there are many resources available such as online tutorials, textbooks, and reference designs from manufacturers. It is also helpful to consult with experienced engineers or researchers in the field to get advice and guidance on building a frequency multiplier with a high factor.

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