Youtor
how to use a frequency counter part 1
>> YOUR LINK HERE: ___ http://youtube.com/watch?v=0yfI5rRV3Pk
See the WARNING later in the textbox. The problems and some solutions in the use of a frequency counter. Biggest problems 1) the counter cable damps the circuit that you want to measure so heavily that it stops oscillating or stops its proper functioning. Remedy: use a small coupling capacitor to your counter. 2) the counter does not read the expected frequency, remedy: subtract the cable capacitance from your calculation. 3) the measured signal is not strong enough. Remedy: study with your scope whether there is a level and/or whether this level is strong enough to drive your counter properly (instruction manual). When the counter does not get enough signal it produces random figures. Please note: also the cable to the oscilloscope (paralleled with the frequency counter) has capacitance and can damp a circuit. In fact its capacitance (even inductance) comes parallel to the measured circuit. Though it seems complex, in real it is not, when the signal is strong enough you will generally spoken get a good reading. When you measure tube circuits always use a capacitor from 30 pF - 400 pF at 300 V - 500 V to your probe. You can damage the very sensitive input from your counter immediately (!) and defenitely when a high voltage enters the input! • LINKS TO INFORMATIVE GENERAL VIDEOS ABOUT ELECTRONICS • What do you need for an electronic lab? • What do you need for an electronic la... • How to test a power supply • how to test a power supply • Elementary electronics, the bipolar transistor part 1 • elementary electronics: bipolar trans... • Elementary electronics, the bipolar transistor part 2 • elementary electronics: bipolar trans... • Elementary electronics: coils • elementary electronics: coils (part 1) • Elementary electronics: how to damage a bipolar transistor immediately (VERY important) • elementary electronics: how to damage... • The most important properties from bipolar transistors • The most important properties from bi... • Prevent transistor leads from breaking • prevent transistor leads from breaking • Combining NPN and PNP transistors in 1 circuit • Combining NPN and PNP transistors in ... • How to make a standard NPN Darlington • how to make a standard NPN Darlington... • What to do with a transistor Darlington • What to do with a transistor Darlington? • How to drive a relay by means of a transistor or Darlington • how to drive a relay by means of a tr... • Discriminating European transistor types • Discriminating European transistor types • 2N3055 with a too low amplification factor, throw them away ? • 2N3055's with a too low amplification... • The importance from the emitter capacitor in a grounded emitter transistor circuit • the importance from the emitter capac... • The transistor series regulator practice (hum suppressor!) • the transistor series voltage regulat... • How to make a shunt – DC ampèremeter • how to make a shunt - DC Amperemeter • Diodes, their voltage drop and its practical application • Diodes: their voltage drop (Si-Ge) an... • Passive diodes testing (barrier voltage) • passive diode testing (barrier voltage) • Passive diode testing part 2 (capacitance-barrier layer) • passive diode testing part 2 (capacit... • Point contact diodes • point contact diodes • Electron tubes, some basics • Electron tubes, some basics • Do our ears make harmonics? • Do our ears make harmonics? 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Link is https://www.lulu.com/shop/search.ep?k...
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