More about amplifier (487)

1-12-1991 | This is an improved version of the slave mains on-off control published in the July 1990 issue of Elektor Electronics. The circuit has be...

1-12-1991 | This simple to build antenna booster offers a gain of some 20 dB over a frequency range that covers the VHF FM radio band and the whole of...

1-11-1991 | The power amplifier presented is a revamped version of the LFA-150 we published in late 1988. It provides rather less power than its popul...

1-07-1991 | When the control voltage at the Input of the circuit is varied from 0 V to +12 V, the LED will first light up green and then gradually, via...

1-07-1991 | The unit discussed here indicates, by means of achain of LEDs, in logarithmic ratios the strength of an electric field surrounding the un...

1-05-1991 | The basic function of a pick-up element is to translate the motion of the stylus into an electrical signal. The most popular cartridges in...

1-04-1991 | Although the analogue record player (as it is now olten called) was written off by many some years ago, well-known manufacturers like Thor...

1-04-1991 | The Type TEA5591A le from Philips contains virtually all the electronics for an AM/FM tuner: all that needs to be added are a few tuned ci...

1-03-1991 | Following the circuit description in our January 1991 issue, we will now focus our attention on the practical construction of the preampl...

1-03-1991 | It is often socially not acceptable to turn up the volume of your amplifier, receiver or television set. In such cases a pair of headphone...