| Electronics > Beginners |
| DIY Differential probe again again - please help :-) |
| << < (3/9) > >> |
| FriedMule:
--- Quote from: ogden on October 05, 2019, 08:05:38 pm --- --- Quote from: FriedMule on October 05, 2019, 07:52:34 pm ---What I men was a drawing ehm... is it called a block diagram? --- End quote --- Yes, I got it. You want diagram? Then draw it. --- Quote ---I presume a simple voltage divider with two resistors? 1:2 / 1:10 or? --- End quote --- Who knows. You want me to give exact divider ratio? This is what I call providing something on silver plate. First you need to know input voltage range of the existing design, gain and output range as well. After that you will start to get clue about voltage divider. BTW simple, two resistor divider won't work on 500MHz probe. It (divider) shall be frequency-compensated. BTW you expect me to answer your questions, yet you ignored to answer mine - about your scope and it's bandwidth. --- End quote --- Sorry trust me I am not asking for any silver platter, every time it sounds like that, please blame my missing language skills! There is no fun in electronic if you either buy it finished or make someone do it for you, but also no fun in getting lost way over your head:-) Sorry forgot about your scope question: it's a 2-Channel 500MHz LeCroy LT342L |
| ogden:
--- Quote from: FriedMule on October 05, 2019, 08:33:30 pm ---Sorry forgot about your scope question: it's a 2-Channel 500MHz LeCroy LT342L --- End quote --- Good. Now we at least know that you possibly/actually may need what you ask for. Sorry for my seemingly non-forthcoming attitude as well - we are tired of those who come and expect somebody else do their homework. When you show that you are seeking answers yourself and need just guidance or even better - confirmation that you are on right track, you will get increasingly better feedback from others. For example you just blindly guessed two values of divider out of thin air w/o showing that you invested your time finding it (divider ratio). Do you think that seeing that I want to invest my time in return to solve problem which is not actually mine? Hint: not at all. |
| FriedMule:
--- Quote from: ogden on October 05, 2019, 09:27:30 pm --- --- Quote from: FriedMule on October 05, 2019, 08:33:30 pm ---Sorry forgot about your scope question: it's a 2-Channel 500MHz LeCroy LT342L --- End quote --- Good. Now we at least know that you possibly/actually may need what you ask for. Sorry for my seemingly non-forthcoming attitude as well - we are tired of those who come and expect somebody else do their homework. When you show that you are seeking answers yourself and need just guidance or even better - confirmation that you are on right track, you will get increasingly better feedback from others. For example you just blindly guessed two values of divider out of thin air w/o showing that you invested your time finding it (divider ratio). Do you think that seeing that I want to invest my time in return to solve problem which is not actually mine? Hint: not at all. --- End quote --- You are completely correct, I have, on an other subject and forum, med many who did expect everything on a silver... hmm no say gold platter and was annoyed that no one did jump at the chance. So I do understand your reaction. :-) My 1:2 / 1:10 was as to ask about if you did mean something like a 1:2 or 1:10, not thinking of some certain number but only if you meant a:b resistor thingy. I know that it would be stupid of me to start recherching the wrong place, so I'd rather ask again and maybe sound stupid, then waste your or my time:-) EDIT: By the way, I do really appreciate that you tell me how my bad English is being read! It helps me so much and I have to try to be better to formulate what I want to say, so that my text really do express what I mean. So many many thanks!! :-) |
| ogden:
--- Quote from: FriedMule on October 05, 2019, 09:43:06 pm ---My 1:2 / 1:10 was as to ask about if you did mean something like a 1:2 or 1:10, not thinking of some certain number but only if you meant a:b resistor thingy. --- End quote --- Yes. Two resistors. Like common 1:10 scope probe. Thou to reach 65 volts with that design, most likely other ratio needed. That's your homework to investigate and try to think of ratio and actual value of those. --- Quote ---EDIT: By the way, I do really appreciate that you tell me how my bad English is being read! --- End quote --- I think you are doing fine. |
| FriedMule:
--- Quote from: ogden on October 05, 2019, 10:20:31 pm --- --- Quote from: FriedMule on October 05, 2019, 09:43:06 pm ---My 1:2 / 1:10 was as to ask about if you did mean something like a 1:2 or 1:10, not thinking of some certain number but only if you meant a:b resistor thingy. --- End quote --- Yes. Two resistors. Like common 1:10 scope probe. Thou to reach 65 volts with that design, most likely other ratio needed. That's your homework to investigate and try to think of ratio and actual value of those. --- Quote ---EDIT: By the way, I do really appreciate that you tell me how my bad English is being read! --- End quote --- I think you are doing fine. --- End quote --- Yes now comes the fun part, first do I have to find out the max voltage the probe can handle safely, then the devider, I hope:-) Thank you so much for helping me in so many ways! EDIT: oh forgot, and this may I need on a silver platter:-) I know that the author has only tried the B variant, but the variants are way over my head, is it possible for me, in any way, to decide what variant is best for my usage or can you see any obvious candidate? |
| Navigation |
| Message Index |
| Next page |
| Previous page |