开云体育

I think you will need to select R38, (~30k) section 5-45, it sets the meter zero by canceling the programming current that passes through the current sense resistor. R53,(3k) may need to be changed

"Scott Vance via groups.io" <scott_l_vance@...> writes:

Hello! My internal sd card has died and filedfox cannot boot. That's why I can 't install updates firmware from Keysight.com

Correction to my previous post: meant to say MINIMUM OUTPUT VOLTAGE after adding the 47K resistor in series with R10 is about 160V, maximum output is still about 320V. I am checking some voltages

Looking for any info on this device. Dual JFET, N-channel, TO-71 package.? I have a 7652A and both were pulled from one of the boards.? I may pull one off another unit to curve trace but thought I

For the sake of testing with correct values, I added a 47K resistor in series with the existing 50K voltage pot, and replaced R13 with 62K, but on the 12mA range without a load the meter needle still

Hello Paul, The replacement for the 432A from Keysight is called N432A. Can be used with normal sensors and also with the 478A. Make sure you get the right adapter

2N4119. A bit more investigation this morning. I have on error 10 ?A10U6 and A10U5 Pin 13 the correct 10 Volts, the drivers U16... are ok. The inputs are correct as listed in the manual. On A10U5

Actually the note left inside the power supply about R10 also mentions R13: "R10 voltage helipot should be 100K R13 ~ 62K. Replaced with 50K Heli 11/19/81 GPM". I checked the existing R13 and its a

"Sven Schnelle" <svens@...> writes:

Anyone know where to find better than this scan from the Keysight site? It's not quite legible... https://www.ecosensory.com/tek/HP-6268B-op-svc-9018-05504-schem.png I found mil manual that is

Anyone know where to find better than this scan from the Keysight site? It's not quite legible... https://www.ecosensory.com/tek/HP-6268B-op-svc-9018-05504-schem.png

You will also likely need to replace R12,13 parallel combination ~2K ohm 3W. R13 is a 1/2W trim resistor, this is between a 6.2V source and terminal A7 on the back. the equation is

Thank you for the information, that saved me some ghost hunting for drifted resistors in the meter circuit. Both the voltage and current adjustment pots are Bourns series 3540 which are rated at

Sounds like that might be a firmware problem if it works when forced into an alternate mode. If there is a firmware download it might be worth checking. Regards Nigel

Hi Orin, thank you for the hint,? i ordered 2N4149A from Dugikey, hope this will solve my cal #10 error. Ralf

Besides the effects on the metering, you may want to check the power rating of the volts pot. The original 100 kR value would dissipate about a watt at full output, now about 2 W with 50 kR. If these

It would be better than nothing. I actually got rid of my fiche reader/printer about 8 years ago after not having used it in over 10 years. Never say never, LOL. Richard

I'd try 2N4119A or PN4119A. I might have some... Mouser are mighty proud of them. [email protected]> wrote:

I don't find a 5070-7074 in the 3455A manual I downloaded, Manual P/N 03455-90003. Looking for Q19, I find A10Q3, 4, 15, 16, 18, 19, 21? which is a 5081-7074 and A15Q19, 20, which is a