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Re: Tek 576 Curve Tracer HV Transformer winding
Thanks Miguel, That's what I was looking for - the info is now saved in my 576 notes. I like that little HV transformer in the picture. It's a fine example of a common method of attaining good HV
By Ed Breya · #159430 ·
Re: Tek 576 Curve Tracer HV Transformer winding
576 Transformer Inductance Resistance AWG mm Turns AL=L/N^2 Pin 2-3 305,0E-6 22,0E+0 25 0,45 26 451,2E-9 Pin 7-8 918,0E-3 85,0E+3 40 0,08 1400 468,4E-9 Transformer core size 50mm 13mm 31mm Inductance
By Miguel Work · #159429 ·
Re: 577 Main board capacitor replacement advise
/g/TekScopes/photo/86536/0?p=Created,,,20,2,0,0 I included a picture from the service manual of the floating power supply that involve these capacitors
By DW · #159428 ·
Re: 577 Main board capacitor replacement advise
I'm troubleshooting a noisey step generator, when I turn the step generator off I don't get any flickering noise artifacts on the display. I figure as the first step is replace any old electrolytic
By DW · #159427 ·
Re: Tek 576 Curve Tracer HV Transformer winding
The only reasons I use an oven over the water technique (aka teacup method) for a couple of simple reasons: 1) it seems less likely to burn me. Water soaks through my leather gloves, and it gets hot
By Chuck Harris <cfharris@...> · #159426 ·
Re: Tek 576 Curve Tracer HV Transformer winding
Thanks Chuck! I put transformers in boiling water some minutes, with the same results Regards Miguel -----Mensaje original----- De: [email protected] [mailto:[email protected]] En nombre de Chuck
By Miguel Work · #159425 ·
Re: 577 Main board capacitor replacement advise
Yes, if you can make them fit. Are the electrolytics bad? If not, I would leave them alone. -Chuck Harris DW wrote:
By Chuck Harris <cfharris@...> · #159424 ·
Re: Tek 576 Curve Tracer HV Transformer winding
Having done hundreds, I find removing the core to be very simple. 1) remove any tape, clips, clamps, etc that are holding the core halves together. 2) heat the core to 130C in an oven. There should be
By Chuck Harris <cfharris@...> · #159423 ·
Re: 577 Main board capacitor replacement advise
Really the question is can I substitute film capacitors for electrolytic I notice there are 2 electrolytic capacitors C391 C393, 15uF 100V, would this film capacitor work
By DW · #159422 ·
Re: Tek 576 Curve Tracer HV Transformer winding
Apart from the TEK Xfmr specification and the recently published ferrite core specification, I have not seen any additional information about this transformer. I would say that the most critical part
By Ulf Kylenfall · #159421 ·
Re: Tektronix 585A Voltage Diagnoses Problem Success!
Randy, You have to rid yourself of that crutch quickly, as it isn't really a crutch, but rather a hobble. Every part you change comes with the risk that you will do it wrongly, and add another thing
By Chuck Harris <cfharris@...> · #159420 ·
Re: Need Help Troubleshooting Tektronix PS280
Troubleshooting linear power supplies: Is about the simplest job out there... possible testing light bulbs in a lamp is easier, but the technique is still the same. Start with your symptom: If it is
By Chuck Harris <cfharris@...> · #159419 ·
Re: Tektronix 585A Voltage Diagnoses Problem Success!
Albert, I printed out your previous replies for my future reference. The reality is that I do not fully understand the circuit logic on this scope which is why I am not too effective at diagnosis. You
By randolphbeebe@... · #159418 ·
Re: Need Help Troubleshooting Tektronix PS280
Hi, John, Wow you really want to make me work hard , but I understand your logic, Which is the proper procedures to troubleshoot any piece of equipment.? This should help any one of us who are new or
By daven9ooq <daven9ooq@...> · #159417 ·
Re: Tek 576 Curve Tracer HV Transformer winding
Hi, my 576: Transformer core size 50mm 13mm 31mm Inductance 1khz 1mA 2-3 305uH 22R 7-8 918mH 85K Rubber potted /g/TekScopes/album?id=94656 I have the idea to use a pre made
By Miguel Work · #159416 ·
Re: Tektronix 585A Voltage Diagnoses Problem Success!
Hi Randy, Well, that was an easy repair after all! I started reading reading your measurements results before I saw this last message. This last message is in a new thread for some reason. My
By Albert Otten · #159415 ·
Re: Plug for 7CT1N captive lead?
To close this: (a) Thanks Dennis (b) the heatshrink plus some other support for the solder joint is absolutely essential for the soldered-pin-only solution, otherwise the joint is just to weak and
By EJP · #159414 ·
577 Main board capacitor replacement advise
I plan to replace some electrolytic and tantalum capacitors on the main board of the 577. I notice there are 2 electrolytic capacitors C391 C393, 15uF 100V, would this film capacitor work
By DW · #159413 ·
Re: Tek 576 Curve Tracer HV Transformer winding
Has anyone measured the low frequency (like 1 kHz) primary inductance of a normal, OK 576 HV transformer? I looked at the data sheets (at tekwiki) on the part, and none appear to show any inductance
By Ed Breya · #159412 ·
Re: Tektronix 585A Voltage Diagnoses Problem Success!
Albert, I re-read your post about the V609 voltage reference tube and it occurred to me that I could not test the 5651 tube with my tube tester so I just put it back in. However, I had another one my
By randolphbeebe@... · #159411 ·