|
O.T. Digital scopes versus Tek analogue.
How many times has the digital scope lied to you because the glitch you were looking for was between samples? Glenn
How many times has the digital scope lied to you because the glitch you were looking for was between samples? Glenn
|
By
Glenn Little
· #179626
·
|
|
93 Ohm feed-thru terminators - Unobtanium? No, as it turns out.
In the 75 Ohm vs 50 Ohm world, the two are completely interchangeable as far as mating is concerned. The 75 Ohm BNC connector is missing dielectric between the center pin and the shield. Based on this
In the 75 Ohm vs 50 Ohm world, the two are completely interchangeable as far as mating is concerned. The 75 Ohm BNC connector is missing dielectric between the center pin and the shield. Based on this
|
By
Glenn Little
· #178995
·
|
|
Shipped They Are
I got mine today and they look great. Glenn
I got mine today and they look great. Glenn
|
By
Glenn Little
· #178827
·
|
|
Ouch... (Tek 6R1A)
I offered $10,, with note it front panel not destroyed would give $200.00 to show that the destruction cost him. Glenn
I offered $10,, with note it front panel not destroyed would give $200.00 to show that the destruction cost him. Glenn
|
By
Glenn Little
· #178473
·
|
|
Selenium rectifiers in Tek equipment
Here is the MSDS for Selenium Oxide. https://www.fishersci.com/store/msds?partNumber=AC193980100&productDescription=SELENIUM%28IV%29+OXIDE+99.9+10GR&vendorId=VN00032119&countryCode=US&language=en The
Here is the MSDS for Selenium Oxide. https://www.fishersci.com/store/msds?partNumber=AC193980100&productDescription=SELENIUM%28IV%29+OXIDE+99.9+10GR&vendorId=VN00032119&countryCode=US&language=en The
|
By
Glenn Little
· #178077
·
|
|
DigiKey BOM for TM500 Tester
Download the spreadsheet and edit it locally. Genn
Download the spreadsheet and edit it locally. Genn
|
By
Glenn Little
· #177906
·
|
|
TM500 Module Construction Details
If the part is beyond repair due to parts not being available and redesign being too costly, the repurpose of the item to aid in the repair of other equipment that can be repaired should be encouraged
If the part is beyond repair due to parts not being available and redesign being too costly, the repurpose of the item to aid in the repair of other equipment that can be repaired should be encouraged
|
By
Glenn Little
· #176682
·
|
|
DOMESTIC {AYMENT INSTRUCTIONS for Peter Keller's CRT Book
I received my book today in Goose Creek, SC. Thank you very much for your time and efforts in making this happen. It arrived in great shape. 73 Glenn WB4UIV
I received my book today in Goose Creek, SC. Thank you very much for your time and efforts in making this happen. It arrived in great shape. 73 Glenn WB4UIV
|
By
Glenn Little
· #176195
·
|
|
Slightly OT: How can I dissolve Potting Compound?
You can try MEK, methyl ethyl keytone. It will dissolve a lot of epoxies. Be careful to not dissolve other things. 73 Glenn WB4UIV
You can try MEK, methyl ethyl keytone. It will dissolve a lot of epoxies. Be careful to not dissolve other things. 73 Glenn WB4UIV
|
By
Glenn Little
· #175818
·
|
|
OT Resistor identification
That is the part. Thanks Glenn
That is the part. Thanks Glenn
|
By
Glenn Little
· #175758
·
|
|
OT Resistor identification
Thanks for the help. I had not seen that coding before. A very good day. I learned something. Glenn
Thanks for the help. I had not seen that coding before. A very good day. I learned something. Glenn
|
By
Glenn Little
· #175750
·
|
|
OT Resistor identification
I have a battery BMS that I am reverse engineering. I have a resistor with a code that I have never seen and cannot find any information on. The resistor is a SMT device marked 4L0. The L appears to b
I have a battery BMS that I am reverse engineering. I have a resistor with a code that I have never seen and cannot find any information on. The resistor is a SMT device marked 4L0. The L appears to b
|
By
Glenn Little
· #175742
·
|
|
I built a TM500 mainframe tester, and updated the design. Someone might find this useful?
Me too. Glenn
By
Glenn Little
· #175680
·
|
|
Yet another 'replacing carbon resistors with metal film' question....
The carbon comp can absorb much more transient energy than a film resistor. The carbon comp is a mass with leads on it, the film is a film deposited on an insulator, much less mass to absorb transient
The carbon comp can absorb much more transient energy than a film resistor. The carbon comp is a mass with leads on it, the film is a film deposited on an insulator, much less mass to absorb transient
|
By
Glenn Little
· #175542
·
|
|
1S1: Defect trigger functionality repair
Mine does not work. Glenn
Mine does not work. Glenn
|
By
Glenn Little
· #175493
·
|
|
Tek 453A
My first 453 had no trace. The fault was a 500 pF filter capacitor on the HV line. The capacitor was a red, possibly epoxy, encased capacitor. When held up to the light you could see black arc marks i
My first 453 had no trace. The fault was a 500 pF filter capacitor on the HV line. The capacitor was a red, possibly epoxy, encased capacitor. When held up to the light you could see black arc marks i
|
By
Glenn Little
· #175459
·
|
|
Resistor in series
From what I can find about carbon composition resistors, the resistive element is a composite of finely ground carbon granules and a binder. The amount of carbon granules in the binder determines the
From what I can find about carbon composition resistors, the resistive element is a composite of finely ground carbon granules and a binder. The amount of carbon granules in the binder determines the
|
By
Glenn Little
· #174149
·
|
|
528A TV waveform monitor.
If it was in use at a TV station, the CRT is probably shot. The only use that I know of for this specialized scope is to monitor analog video to set levels and for signal verification. It has use in a
If it was in use at a TV station, the CRT is probably shot. The only use that I know of for this specialized scope is to monitor analog video to set levels and for signal verification. It has use in a
|
By
Glenn Little
· #173959
·
|
|
Resistor in series
Baking the resistor will only fix it for the short term. It will absorb moisture again as you have not fixed the problem, only the symptom. There is a crack or 0r other point of moisture incursion in
Baking the resistor will only fix it for the short term. It will absorb moisture again as you have not fixed the problem, only the symptom. There is a crack or 0r other point of moisture incursion in
|
By
Glenn Little
· #173870
·
|
|
067-0525-01 or equivalent needed.
It appears a BNC T adapter, two equal lengths is 50 Ohm coax and another 50 Ohm coax would create a dual input cable to serve this need. Glenn
It appears a BNC T adapter, two equal lengths is 50 Ohm coax and another 50 Ohm coax would create a dual input cable to serve this need. Glenn
|
By
Glenn Little
· #173158
·
|