I've been having nothing but trouble with noise in my fpv feed on my freestyle quadcopters. I've tried creating large LC filters, low ESR capacitors every ESC, battery terminals, on the camera and video transmitters and still have problem with noise getting into my fpv feed.
Now I'm thinking I should build a dc-to-dc linear regulator with filtering on the input and on the output and see if that will solve my problem.
I'm looking some ideas how this circuit should be built. My fpv equipment can accept battery voltage so I don't have to lower it to 12 volts. Was just thinking doing so with an lm7812 would regulate the voltage to take away a lot of the noise.
Thinking of using a LM7812 circuit for the regulation and a LC filter on the output and input with a 1000uf low ESR capacitor on the end out the output filter....
Or is there a simpler way of doing this?
I need to go from 16.8 volts down to 12v or so what the max current draw 350ma.
I have Regulators, diodes, capacitors, resistors, inductors, transistors, mosfets , etc... I see a lot of circuits using LM3xx components I only have Lm358 if need be.
I just need to figure out a way to get a super clean 12-volt lowest noise possible. My camera and video transmitter can accept battery voltage.
ive included a couple example circuits. I am open to any recommendations. I just almost Fed Up with getting noise in my fpv feed no matter what I try. Keep in mind this will be powered from a 4S LiPo battery. I quadcopter can pull an excess of 120 amps for a brief moments. So there is a lot of noise going to be introduced.
Now I'm thinking I should build a dc-to-dc linear regulator with filtering on the input and on the output and see if that will solve my problem.
I'm looking some ideas how this circuit should be built. My fpv equipment can accept battery voltage so I don't have to lower it to 12 volts. Was just thinking doing so with an lm7812 would regulate the voltage to take away a lot of the noise.
Thinking of using a LM7812 circuit for the regulation and a LC filter on the output and input with a 1000uf low ESR capacitor on the end out the output filter....
Or is there a simpler way of doing this?
I need to go from 16.8 volts down to 12v or so what the max current draw 350ma.
I have Regulators, diodes, capacitors, resistors, inductors, transistors, mosfets , etc... I see a lot of circuits using LM3xx components I only have Lm358 if need be.
I just need to figure out a way to get a super clean 12-volt lowest noise possible. My camera and video transmitter can accept battery voltage.
ive included a couple example circuits. I am open to any recommendations. I just almost Fed Up with getting noise in my fpv feed no matter what I try. Keep in mind this will be powered from a 4S LiPo battery. I quadcopter can pull an excess of 120 amps for a brief moments. So there is a lot of noise going to be introduced.
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