| This `inaudible` car horn is intended for warning four-footed pedestrians of imminent danger, without needlessly scaring the (h...
| This `inaudible` car horn is intended for warning four-footed pedestrians of imminent danger, without needlessly scaring the (h...
| The 74121 IC is a monostable multivibrator, the pulse length of which may be varied from 40 ns to 40 s. An external RC-network...
| Readers may remember that the `Discolights` featured in Elektor September 1975 used TTL shift registers to drive triac switches. This is...
| A linear timebase and stable trigger circuits are essential to the operation of an oscilloscope. Good linearity of the timebase ensures t...
| Variations in power supply voltage can have a detrimental effect on the functioning of many electronic circuits. In such cases provis...
| The dual-slope technique is one of the simplest and most reliable DVM systems. The voltage to be measured is fed to an integrator for a fixe...