need circuit suggestion
- Thread starter pager48
- Start date
MaxHeadRoom
- Joined Jul 18, 2013
- 28,681
You want an off the shelf solution????
Max.
Max.
I bought one of these. Love it.
https://www.ebay.com/itm/30MHz-Feel...h=item1a498573e2:g:JU4AAOSwKwhb18Sk:rk:3:pf:0
https://www.ebay.com/itm/30MHz-Feel...h=item1a498573e2:g:JU4AAOSwKwhb18Sk:rk:3:pf:0
MaxHeadRoom
- Joined Jul 18, 2013
- 28,681
You did say 'Complete Ready Made' circuit??
Max.
DickCappels
- Joined Aug 21, 2008
- 10,169
Generally the term "Complete ready made circuit" is considered here to be the same as a "complete ready made product".
So what you want (I assume) is a complete, tested, circuit schematic with a parts list.
How wide a frequency range do you expect with one pot twist?
So what you want (I assume) is a complete, tested, circuit schematic with a parts list.
How wide a frequency range do you expect with one pot twist?
There are gobs of circuits at the link below:
https://www.dxzone.com/catalog/Technical_Reference/RF_Signal_Generators/
One that stands out operating at more or less the frequency of interest is:
https://www.dxzone.com/dx24600/a-homemade-signal-generator.html
There is another one, but it is very simple and stability will be a problem:
https://www.dxzone.com/dx16049/vk1pk-rf-signal-generator.html
https://www.dxzone.com/catalog/Technical_Reference/RF_Signal_Generators/
One that stands out operating at more or less the frequency of interest is:
https://www.dxzone.com/dx24600/a-homemade-signal-generator.html
There is another one, but it is very simple and stability will be a problem:
https://www.dxzone.com/dx16049/vk1pk-rf-signal-generator.html
Two distinct impressions I got:
1) "I want a complete ready made circuit".
2) "I want someone to engineer the circuit for me".
1) There are plenty of off the shelf parts that are generally considered to be complete ready made circuits; and 2) We help each other figure out our circuits and other problems. We DON'T expect someone to engineer a solution to a problem we present. The services of those engineers who do as you're asking also charge a hefty price for their knowledge, experience and expertise.
I will give you this: A flip-flop can give you a perfect 50% duty cycle. You'd have to research the data sheets for such flip-flops to find one that can operate within the range you seek. But then you'll also need to build a clock circuit to drive the flip-flop capable of those speeds.
Turning a pot to switch from 1 MHz to 2 MHz? Instantainiously? If so - you'd be better off with a switch. Better yet, since many flip-flops come in dual packages, you can use one to give you a 2 MHz 50% duty cycle running on a clock that is giving you 4 MHz output. Use the second flip-flop to divide by 2. In other words, with the flip of a switch you go from 1 MHz to 2 MHz and back again. No pots needed.
If I'm not understanding you correctly and you want to sweep through the range from 1 MHz - through all the frequencies between 1 and 2 MHz and up to 2 MHz - THAT is done with the clock.
1) "I want a complete ready made circuit".
2) "I want someone to engineer the circuit for me".
1) There are plenty of off the shelf parts that are generally considered to be complete ready made circuits; and 2) We help each other figure out our circuits and other problems. We DON'T expect someone to engineer a solution to a problem we present. The services of those engineers who do as you're asking also charge a hefty price for their knowledge, experience and expertise.
I will give you this: A flip-flop can give you a perfect 50% duty cycle. You'd have to research the data sheets for such flip-flops to find one that can operate within the range you seek. But then you'll also need to build a clock circuit to drive the flip-flop capable of those speeds.
Turning a pot to switch from 1 MHz to 2 MHz? Instantainiously? If so - you'd be better off with a switch. Better yet, since many flip-flops come in dual packages, you can use one to give you a 2 MHz 50% duty cycle running on a clock that is giving you 4 MHz output. Use the second flip-flop to divide by 2. In other words, with the flip of a switch you go from 1 MHz to 2 MHz and back again. No pots needed.
If I'm not understanding you correctly and you want to sweep through the range from 1 MHz - through all the frequencies between 1 and 2 MHz and up to 2 MHz - THAT is done with the clock.
