| This circuit is designed to replace the moving coil centre-zero meter which is used as a tuning indicator in many receivers. Th...
| This circuit is designed to replace the moving coil centre-zero meter which is used as a tuning indicator in many receivers. Th...
| 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...
| 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...
| This circuit is designed to indicate the onset of clipping in an amplifier on both positive and negative peaks. Clipping occurs...
| This circuit is designed to indicate the onset of clipping in an amplifier on both positive and negative peaks. Clipping occurs...
| Depending on type and the current flowing, • the forward voltage drop of an LED may lie between 1.4 and 2 volts. The temperatur...
| Depending on type and the current flowing, • the forward voltage drop of an LED may lie between 1.4 and 2 volts. The temperatur...
| Using a µA 739 dual, tow-noise op-amp it is a simple matter to construct a versatile preamplifier for a magnetic guitar pick-up...
| Using a µA 739 dual, tow-noise op-amp it is a simple matter to construct a versatile preamplifier for a magnetic guitar pick-up...
| As PLL (phase-locked loop) ICs are still somewhat expensive it seems reasonable to look around for a cheaper alternative,...