Guitar amplifiers using output devices such as the TDA7293 (100 W) or LM3886 (68 W) are surprisingly often damaged as a result of the excessive supply voltage in the quiescent state. The tra... Read more
Keen cyclists will no doubt have sometimes thought that it would be nice to have some kind of on-board power supply to charge a mobile device such as a phone or a satnav while on the road. T... Read more
The low dropout voltage regulators from the LM2931 series are not just useful for powering microcontroller systems — they can also act as a low-frequency (practically) random noise generator... Read more
The LED bicycle light that we described in the July/August 2009 edition of Elektor has proved very popular. The author was particularly struck by the basic design, but as always, there is ro... Read more
There are presently many switching regulator ICs. However, the STA801 and STA802 provide two switching regulators in a single package, each capable of supplying a maximum current of 0.5 A. E... Read more
Nowadays, there is a whole series of switching regulator ICs that work according to the step-up principle and thus convert the input voltage to a higher output voltage. This takes place usin... Read more
If you wish to convert a range of possible input voltages into an output voltage that lies somewhere in the middle of that range, a regulator that can automatically switch between step-up an... Read more
Everyone will be familiar with the problem of the voltage drop across wires, connectors or filtering components such as inductors, which force the voltage at the regulator output to be set h... Read more
In the form of the LT1618, Linear Technology (www.lineartech.com) has made available a step-up switching regulator with a current limit mechanism. This makes it easy to protect an otherwise... Read more
Power shortage problems arise when too many USB devices connected to PC are working simultaneously. All USB devices, such as scanners, modems, thermal printers, mice, USB hubs, external stor... Read more
