ADD A FUSE HOW TO
ADD A FUSE INSTALL

I had left so little margin, the fuse blew, right before the show. That lower frequency meant the transformer had more loss and drew more current. It worked fine in my lab, but when the marketing folks took it to Electronica in Munich, Germany, the machine was powered by 50-cycle ac. My mistake was to size the fuse too close to the expected load from the high-voltage linear transformer. I knew that if the fuse tripped, that meant something was seriously broken there would be no random trips, or so I thought. I once designed an ultraviolet eraser for UVPROM wafers in a semiconductor machine. That will create a larger, shorter current pulse that may open a fast-blow fuse. You have to consider the condition when you connect power right at the maximum voltage. What can be tricky about loads fed by ac wall power is that when you switch them on, the inrush might be less severe if you switched them when the input voltage just happens to be at zero volts. Incandescent bulbs, capacitive loads, and both linear and switching power supplies have a large inrush of current when you turn them on. Yet a fast-blow may be subject to nuisance failure, due to momentary overload. A fast-blow fuse will open quickly, before wires or traces or devices get too hot.

Once you have established the package of the fuse, perhaps in conjunction with that effort you should decide on the speed of the fuse (Fig. A fuse can protect people from a shorted voltage to the case, as well as keep a product from catching fire. Underwriters Laboratories was started to help insurance companies reduce their fire insurance risk.

The low-impedance source will provide plenty of current that will melt copper and start a fire (Fig. This could be a product that plugs in the wall, or is powered by a battery, or one that runs from the alternator in your car. After you get things working, you can then design in a fuse.Īnything powered by a low-impedance source needs a fuse. Then your misbehaving circuit will just get hot, instead of blowing up. You want to set the current less than what would melt a bond wire inside the transistor or IC. Rather than counting on a fuse to protect your transistors, you can power the circuit you’re developing with a laboratory power supply and set the current limit to an ampere or so. Another common failure is from electrolytic and tantalum capacitors, which can fail in a short-circuit. This can happen when shorts develop from abraded wires or magnet wire getting shorted from vibration and constriction due to ac magnetic fields. It would be even less suited to protect a laser diode, since those get ruined with a few nanoseconds of overcurrent.įuses are ideal to protect wires and printed-circuit-board (PCB) traces from melting and fire. Some anonymous wag came up with the aphorism, “A twenty-dollar transistor will always blow to protect a ten-cent fuse.” A fuse isn’t intended to protect a transistor. Fuses will also prevent lethal voltages from shocking users. Electronic systems have the same fire concerns and they need fuses as well (Fig. Electrical systems need them for the same reason.

With the advent of electrical distribution in the 1800s, fuses became an essential device in preventing fires. Sometimes we wish there was no such component needed for our circuits. We have all been annoyed or exasperated by a blown fuse.

ADD A FUSE HOW TO

Wide Range of Uses: You can use this dual-slot fuse holder when adding LED strips, radar detectors, dash cams, or any other electronic that requires direct wiring into the fuse box without cutting or splicing.It’s easy to trivialize the need for a fuse and how to select one.

Superior Quality: All of them are made from high-quality materials, good bending performance, melting resistance, and excellent electrical conductivity, durable and practical for your DIY application.

ADD A FUSE INSTALL

Easy to Use: No need to cut or splice wires to install your electronic accessories, convenient and easy to add an extra power or connect to the fuse box.

Blue flexible socket tail, very easy to connect to any naked wires by only using a vise.

Dual-slot Fuse Holder: Provides one fuse holder to protect existing circuits and a second fuse holder to protect the new circuit.

Universal, works on more than Cali Raised LED products. Or even a great replacement fuse option for your vehicle. Perfect For Wiring Raptor Lights, OEM Switches, and other auxiliary items. 12V ADD A FUSE KIT W/5AMP LOW PROFILE MINI BLADE FUSE

Add a fuse