| In microcontroller circuits quartz crystals provide the highest accuracy for keeping everything on frequency. With frequency and time measur...
Rainer Reusch (14)
| Anyone experimenting or developing USB ported peripheral hardware soon becomes irritated by the need to disconnect and connect the plug in o...
| Crystal oscillators for digital circuits are normally built as Pierce oscillators with an inverter. The inverter operates as a linear amplif...
| Most PC-motherboards have multiple connectors for plugging in the cooling fans. These are increasingly frequently the four-way connectors. T...
| The EEPROM in a microcontroller is often used to store collected data or device settings so that they are still available even if the device...
| Using one inverter, for example from a 74HC04 or a 4069, it is easy to construct a crystal oscillator. Unfortunately the current consumption...
| Consumer appliances these days hardly ever have a proper mains switch. Instead, appliances are turned on and off at the touch of a button on...
| The reception quality achieved by ready-made DCF77 receiver boards tends to be proportional to their price. In areas of marginal reception (...
| Most DVM modules are based on the well-known ICL7106 IC. They operate from an ordinary 9-V battery, and they only provide a fixed measuring...
| The backlights used in some LCD panels are not exactly economical: typical current draws of 20 mA to 100 mA are common. Normally the current...