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Noise generator

papele

Feb 21, 2023
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Good evening I have to build a uhf noise generator for tv systems. I'm looking for a pattern with bfr 91. you give me a na no.? Thank you. .
 

Delta Prime

Jul 29, 2020
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More information is needed.
Are you trying to down convert amateur television broadcasting signal into the UHF tv spectrum.If So than
Only a 625 line television would work .
Also,., Are you trying to make the noise generator amplifier with the bfr 91 transistor?
I think that's older than 741 op amp.
 

papele

Feb 21, 2023
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Feb 21, 2023
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no to test TV antenna systems. it must generate a constant gain signal on the entire uhf dvbt band.
 

Delta Prime

Jul 29, 2020
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That's how power amplifiers normally work. Flat frequency response over the entire bandwidth, ideally. What kind of noise would you like...white noise? pink noise? blue noise?
TDE800UHF is a broadband UHF high power amplifier, based on BLF888A LDMOS device in a SOT539A ceramic package. TDE800UHF works in AB class and it is able to cover the whole frequency band 470-862 MHz

 

Delta Prime

Jul 29, 2020
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pattern with bfr 91
You have to be a little bit more forthcoming you have to volunteer the information regarding your specific criteria. Would you like to buy it off the shelf or would you like a schematic with the transistor using the transistor bfr91.
 
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