Elektor Team (9510)

1-07-1977 | In contrast to lowpass or highpass filters, the gain of an all-pass filter remains constant over the range of frequencies at...

1-07-1977 | The recent reduction in the price of nickel cadmium batteries has led to increasingly widespread use of these energy source...

1-07-1977 | This filter will pass signals at its centre fre- quency while attenuating signals at all other frequencies. The input signal is...

1-07-1977 | It is sometimes necessary to provide a nega- tive supply voltage in a circuit that otherwise uses all positive supply voltages, for...

1-07-1977 | It is sometimes necessary to provide a nega- tive supply voltage in a circuit that otherwise uses all positive supply voltages, for...

1-07-1977 | Using a National LM39 l l IC, a l mA meter and a few resistors it is a simple matter to construct a thermometer to measu...

1-07-1977 | Using a National LM39 l l IC, a l mA meter and a few resistors it is a simple matter to construct a thermometer to measu...

1-07-1977 | This preamp is specifically intended for use with low impedance microphones; its advantages are high output level, large ban...

1-07-1977 | This preamp is specifically intended for use with low impedance microphones; its advantages are high output level, large ban...

1-07-1977 | This circuit is designed to replace the moving coil centre-zero meter which is used as a tuning indicator in many receivers. Th...