Products > Test Equipment
Fluke-196B Software and power adapter.
<< < (5/5)
Lachin012:
mahi thank you very much for what you did for me, yes, I paid attention to the red inscriptions, I understand that you don’t need to look at them, but you need to look at the value on the resistors themselves, so I made a mistake about connecting the TL431, it just showed me that Ref must be in place of the cathode and the cathode in place Ref.
Lachin012:

--- Quote from: mahi on November 01, 2022, 11:12:48 am ---Lachin012: I could open the power supply again and measure the dimensions but I'm not really sure what it is good for. You can't get the Fluke enclosure so what's the point of making the PCB the same size? If you really want to replicate the circuit, get the components, find a suitable enclosure that will fit everything and design a PCB for that enclosure. But honestly, I think you are over-complicating things. You get noise from your switched-mode power supply. Just replace it with a transformer-based one (admitted, these may be harder to find nowadays as pretty much all power supplies are SMPS). If you want to make one yourself, build a circuit around a transformer, full-wave rectifier, 7818 voltage regulator and some smoothing capacitors: Example circuit.

Decibel (dB) measurements are voltage measurements on a logarithmic scale and are useful to determine gain and loss (e.g. 3dB gain). There are two modes: dbV and dBm. dBV is a decibel scale relative to 1 volt (1V = 0dBV) and dBm is a decibel scale relative to 1 milliwatt in a 600 ohm impedance (0.775V = 0dBm). The latter is a common unit in audio measurements. Other common impedances are 50 and 75 ohm. Some multimeters allow the user to set a custom impedance for the dBm measurements but I don't think the Fluke Scopemeters support that.

--- End quote ---

mahi you explained everything well, but please tell me, what probes should measure dB?
Navigation
Message Index
Previous page
There was an error while thanking
Thanking...

Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod