| It will be a mobile battery powered design (2xAA). With switched power supplies +3,3V and -3,3V is generated. Some of the things changed by...
![Android ECG Meter [120107]](https://cdn.xingosoftware.com/elektor/images/fetch/dpr_1,w_800,h_340,c_fit/https%3A%2F%2Fwww.elektormagazine.com%2Fassets%2Fupload%2Fimg%2Fpublic%2Foriginal%2Fdscn1874.jpg)
| It will be a mobile battery powered design (2xAA). With switched power supplies +3,3V and -3,3V is generated. Some of the things changed by...
| A DIY electrocardioscope using an Android tablet or smartphone as a wireless terminal for viewing the electrocardiograms.
| This is a concept for a high speed 480Mbps usb isolator.The reason for using the UTMI bus is that 480MHz digital isolators are not availible...
| After having designed a switched [nodepicker==node/1952==Switched%207805%20Replacement==7805%20replacement] it was suggested that I should...
| After having designed a switched [nodepicker==node/1952==Switched%207805%20Replacement==7805%20replacement] it was suggested that I should...
| A small PCB the size of a TO-220 case containing a PWM voltage regulator to replace the classic 7805 by a more efficient regulator and with...
| A small PCB the size of a TO-220 case containing a PWM voltage regulator to replace the classic 7805 by a more efficient regulator and with...
| If your USB device ever suffers from noise caused by an earth loop or if you want to protect your PC against external voltages then you need...
| If your USB device ever suffers from noise caused by an earth loop or if you want to protect your PC against external voltages then you need...