More about current (255)

1-01-2013 | Central current sources on USB host devices are often saisd to be limited at well over 500 mA. Are they? We investigate once again.

1-01-2013 | Reducing the number of interconnections in any system improves reliability. In June 2012 we published an idea by this author which uses just...

1-01-2013 | The circuit shown here is a current-controlled inrush limiter placed in series between the AC line and the switched load. It uses a coil and...

1-12-2012 | A transconductance amplifier like this can be used as a versatile amplifier stage for a wide range of measurement functions, as you’ll see i...

9-11-2012 | This project was inspired by a model plane enthousiast who likes to fly large models. One problem he had was that when the battery pack is c...

1-10-2012 | Professional current transformers often use toroidal cores and are wound to high precision. The purpose of this article is to demonstrate ho...

1-09-2012 | After working on a number of USB-related projects it occurred to me something odd was happening with the power supplied to a connected USB d...

1-07-2012 | Relays or contactors are often used to switch AC-powered inductive loads such as motors, valves or electro magnets. When the device is switc...

1-05-2012 | The energy consumption at home is difficult to check because of the ever increasing number of electrical devices. So it is about time to do...

1-04-2012 | Designing electronic circuits usually starts with studying the data sheets of complex integrated circuits. However, you should not lose sigh...