Finding secondary coil frequency " the easy way !" скачать в хорошем качестве

Finding secondary coil frequency " the easy way !"

Hi all. This demo shows how I find the frequency of the unloaded secondary coil. I always use this method and have never had any issues. secure the coil to a non metallic object , I used a box ! Connect the positive output from a signal generator to the base of the coil. next secure the scope probe about 6"away from the coil and Connect the probe ground to the generators ground, or , if you don't have a scope , you can use a dmm set on frequency and Connect in the same way as the scope. now , starting at around 50kHz , gradually increase the frequency of the generator whilst watching the wave form on the scope. As the frequency increases , so the wave form on the scopes display will also increase in amplitude. when the wave form reaches a peak in amplitude before dropping off , that peak will be the operating frequency of the coil. Some people do this with the top load also in place. This is good as it gives you a running frequency close to what it actually will be as the top load size directly affects the running frequency by lowering the frequency. Example , if the unloaded frequency is, say , 100kHz, then adding a top load may drop the frequency to 80kHz or so. Hope this is vid is helpful.