Some high resolution/quality pics from a digi camera to check out on Browse through the extensive list of post to learn more on a wide variety of information.The high voltage page is dedicated to some interesting circuits using automotive ignition coils, or step-up transformers.Ĭircuit descriptions and images are available, i have tried to make it as clear as possible in the block diagrams, also there are
In some cases there will be a blog post with additional information on some of our featured products. The Circuit Specialists blog was created to bring our visitors knowledgeable articles on products, tools, and fields in which products may be used. Reasons for Microstepping a Stepper Motor (Part One) →.← Switching Power Supply: Preventing Noise.There’s really no reason to discharge a capacitor with a screwdriver when all you need is a light bulb or a resistor, so keep that in mind the next time you need to discharge capacitors in a switched-mode power supply. It is a very simple and effective process, taking mere seconds to completely discharge the capacitor.
You can use a 2.2k ohm ten-watt resistor to discharge high voltage capacitors in a switched-mode power supply. The last method consists of placing the leads of a high-wattage resistor on the capacitor’s leads. If there is a charge present the light bulb will illuminate and eventually turn off when the capacitor in the switching power supply is discharged. The light bulb acts as an indicator, showing if the capacitor contains a charge. The second method involves placing the leads of a socketed 100 watt electric light bulb on the capacitor’s lead and is used by technicians around the globe. A heavy spark is especially dangerous: it can cause small bits of solder lead or copper to shoot from the circuit board, potentially injuring your eyes. If the capacitor is holding a heavier charge, discharging the capacitor can melt the screwdriver’s tip as well as the copper of the printed circuit board. Keep in mind that if you know a capacitor’s stored voltage is relatively low, you can discharge it with a small screwdriver without undue risk. Using a screwdriver to discharge the capacitor is not recommended because you can generate a spark and damage the printed circuit board or circuitry of the power supply. There are three different ways to discharge large filter capacitors in a power supply: with a screwdriver, the leads of a socketed 100 watt light bulb, and the leads of a high-wattage resistor. You must discharge the capacitors before working on power supply circuits so you won’t get shocked. These filter capacitors typically have values as high as 220uF/250V and 330uF/400V. Switched-mode power supplies have multiple large-filter capacitors that can hold hazardous charges, even if the power supply hasn’t been used in days.
#A CHRISTMAS LIGHT IS MADE TO FLASH VIA THE DISCHARGE OF A CAPACITOR HOW TO#
Here is a short tutorial on how to discharge the capacitors in a power supply so you can safely repair it:
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