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A potential problem is the voltage also has to have enough current when the cylinder is at the top of the compression cycle and a voltage reading under "no load" might not indicate the voltage when

Hey guys, I’m not sure after all this time if the group rules allow posting links to Amazon site. So I’ll just tell you to go to Amazon and search for “spark plug voltage tester”. You

Somehow the idea of using a HV probe that requires Freon cooling is a bit beyond the pale even for me! My Bird Termaline Watt Meter is rated at 60W, I mounted 2 4" 120V muffin fans against the heat

Back when I was doing automotive ignition system system development, we used a Tektronix HV probe, quite similar to https://www.bellnw.com/products/tektronix-p6015a It required a Freon charge inside

I had a thought a moment ago, it is entirely possible the Panasonic capacitors Kenwood chose for their factory backup board were designed for ultra low leakage and normal supercapacitors might have a

Hello, I ment as precise as possible 1C presition is cool too. I want to use feedback mechanism to regulate the temperature of a box. I want to do some fancy analog feedback like PID controller

We were discussing batteries a few weeks ago and I mentioned I used high value capacitors, AKA super capacitors, to replace the 3V lithium disk cell. I received an email asking for details. All of

I ran into a problem Monday, time for the first lawn cutting of the year, trust me, at 73 I don't even use a riding mower because the vibration would kill my artificial knees, our landlords are a set

Pull out your analog design books. This is a feedback loop.? The two NPN transistors are a differential pair.? ?I trust you know how differential pairs work.? The difference voltage between the

Hello, I am trying to understand the dinamics of the circuit taken from the youtube video. if we apply 2V DC the node 2 on the photo will be 1.4 (Vbe=0.6) The node 1 will expirience some voltage wich

On Fri, Feb 28, 2025 at 11:35 AM, wn4isx wrote this about motorcycles: I have a theory about that.? Drivers instinctively use the space between oncoming headlights to gauge how far away it is.?

This is just a question about the question you asked, as I am unable to provide information about plans for a differential temperature regulator - I am unsure how to interpret "1Kelvin". Do you mean

Hello, I am looking for a differential feedback temprature regulator project which explains the theory best it could and give practical example in simulation. I am looking to design a very precise

Another extensive active antenna link! Thanks! More reading ? Time allowing, I will build something. Right now, I got to take care of business as a priority so getting something that reasonably

While I learned the required subject mator for my two degrees in university, the main thing I learned in university was how to research. It was a bit of a challenge to transition to the web but well

Thank you wn4isx! Your link to Martin G8JNJ's active antenna pdf very extensive: https://qsl.net/l/lw7dfm/Antenas/Antena%20Mini%20Whip/MARTIN%20-%20G8JNJ%20- %20Active%20antennas.pdf More

I found that one, https://www.pa3fwm.nl/projects/miniwhip/, but I have not found the second part one in the pictures that is discussed with improvements. I found this one that looks

After spending too much time searching and reading about active antennas and building a library, I visited Amazon. Search for "Mini-Whip Antenna". There are enclosed ones, but I ordered a promising

Pieter-Tjerk de Boer, PA3FWM has a series of articles on E-Field antennas that can be extremely helpful in getting the best performance from these antennas. Fundamentals of the MiniWhip

Pedid y recibiréis Simple and better circuit for MiniWhip antennas https://www.pa3fwm.nl/projects/miniwhip/ The 2SC5551A might be a viable substitute for the 2N5109 in the original PA0RDT