This file contains information on tube transconductance. How it is computed and how it is used. It is one of the best descriptions around. It is simple and doesn`t get very deep into the math. It is an old 1940s Bell Labs document written by T. Slonczewski. This file contains information on tube measurements, including mutual conductance, grid vol
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tage, plate resistance, plate current and plate voltage. This is primarily a description of the underlaying physical aspects of the tube and how it works. The text only very lightly touches on the math. If you know Ohms law you will be perfectly comfortable reading this artical. These two files contains information on how to test photodiode tubes as well as photoresistors and solidstate photodiodes. The text file describes how to perform the test, the second file shows the schematic. This file is a description of the common 80, 5Y3, 5Z3 and 5U4 type fullwave rectifier tubes. It also describes when and how you can substitute the tubes with other common varieties and how to replace them with solidstate diodes. This file is a one page ad for the Amphenol magic eye tube mounting assembles It includes a detailed description of the assemblies and example diagrams for wiring eye tubes into existing circuits. These two files are from a data sheet included in a RCA UY-227 globe tube box. The first is the data sheet for the tube. The second is the license agreement. Yes, you had to open the package to read the agreement. Sound familiar This is a zip file containing eight pages (JPG format) from a Burroughs document about their Nixie tubes including, data, characteristics and circuit designs. This is a png file containing the schematic of the stock quote circuit board. Sorry about the poor quality, it is all we have. It is a high...
This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of....
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is....
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to....
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This....
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the....
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,....
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the....
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power....
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
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