Hello All: Just saw this after some months of absence. As a power electronics engineer the variacs are a fundamental tool, over the decades I have accumulated perhaps 50 - 100, all brands and sizes 1.

Ernesto: There are at least two types of "mu-metal", with different characteristics. The Perfection Mica brand has "netic" and "co-netic" for high flux and low flux applications. The thin foils are de

Dear Dennis: Perfict, my sentiments exactly! Is there a way to stop OT posts before huge threads start, eg some moderation robot to cordially inform the poster of the specific focus of our group? Many

Bonjour Chris, in 1964 we used Burr Brown dual 12AX7 opamp modules, in huge analog computer. I suggest to get textbooks on operational amplifier and analogy computing first. Analog Devices is a great

Michel good work, I have a finest 576 no issues but like to have a spare transformer Forgotten the cost, and compatibility, any photos the finished unit or serial numbers range of compatible 576? Many

Hello all! Fine to see this. I have been doing Tesla coils since 1950s when I was a young and foolish kid. See old issues of "Tesla Coil Builders Association" back to 1980, by Harry Goldman. Available

Bonjour Robin: I had many TEK cameras circa 1980s..1990s and use 7000 series and 2465/7B. I used my compact Panasonic Lumix LX-5 and LX-7 at fiorst in macro mode. I took the most basic camera, with th

Bonjour, ESR is a function of the frequency testing and to some extent the current When . In circuit checking old capacitors for failure, the very low capacitance is another clew, so exact ESR test is

Bonjour à tous Have been using Avast free AV found some years, very unobtrusive and spares resources. Highly recommended. W10 defender is automatically dialed off whether W10 detected installation of

Dear Dennis pity, suggestion, get copies og the emails including the headers and forward to security department of your email server or host. Outlook is not a secure email client Just my thoughts Jean

1 m or 50 ohm in parallel with input capacitor e.g. 20 pf. Same as for analog scopes Jean-Paul

Hello all, Seems easier to find the exact hood on epay, just needs patience. I have acquired several of the 2465, 2467 and 7000 hoods years ago. then, I discovered that the old Polaroid Tek cameras ca

Bonjour David: First a precaution: Both P6201 or P6202A FET probes are VERY easily damaged by ESD, or overvoltage! They have some protection but the capacitance and BW limit the type of protection so

Mark and Colin! Many thanks! Perfect! Yes the resistance is ~ 500 Ohms. Didnt find the note re 11000 and digital series TEK. For sure 2465/7B have no provision for scale 1000. Will try a few of your s

Bonjour Alberto, you are fortunate as 7904A and 7104 are the best mainframes, I have the same. The 2465/7B is the last TEK CRT scope and capable of decades more service. Main issues: RIFA PSU X, Y cap

Bonjour a tous: I was testing several Tek P6015A 1000X HV probes with scopes that have the sensing of the probe ID pin. Discovered on 2465/7/B the P6015A will not work, every unit (tested 4 scopes and

Leandro, did you do a complete calibration? What was the cal status before backup of NVRAM? Did you do a DC bal? Your description points to lack of CAL. Do you have the required CAL generators? Ciao J

Nenad and Albert I will first try 99% Iso Alch from Amazon. Found a giant plastic disposable syringe and long needles. Just exercising the V/DIV improved it somewhat but some positions seem mechanical

Scott: A photo would be helpful. Before a CRT replacement,RE A5 leaky SMD lytic issue,possibly the DAC and REF area have hidden damage, inner layers PCB, vias, etc. Need to throughly inspect and clean

Cliff and Dave: On my 7L5, SN B09..., same: Random init dot, never 0, sometimes 3777. Be fine to engineer a fix! How many out there have the tracking gen, OPT 25, a very useful option? Jon