Elektor Team (9517)

1-07-1988 | 0I Circuits for the generation of control pulses for servo apparatus remain popular, which seems a good enough reason to present another one...

1-07-1988 | 0I The proposed power supply switches itself off when no current is drawn by the load. How this is done is shown in the circuit diagram, Fig...

1-07-1988 | EE JULY/AUGUST 1988 There is a growing tendency to use liquid-crystal displays (LCD) as the screen of computer monitors. Such dis- plays may...

1-07-1988 | 0 It"s dark and it"s raining cats and dogs. You rush to your car, open the door and quickly close it behind you again. Then you sit there fu...

1-07-1988 | 0I The polarization of satellite TV signals is defined as horizontal (H) or vertical (V) with respect to the equator below the subsatellite...

1-07-1988 | EE JULY/AUGUST 1988 A number of appliances, such as an EPROM programmer, require a supply voltage that can be switched to a variety of level...

1-07-1988 | 0I The proposed AVC gives weaker com- ponents of the input signal extra amplifi- cation while ensuring that this dynamic compression is not...

1-07-1988 | 0 SAMPLE & HOLD FOR ANALOGUE SIGNALS Conventional analogue sample and hold circuits are notorious for their tendency to drift, a phenomenon...

1-07-1988 | I ¬?I 1 I LOW-FREQUENCY LC OSCILLATOR It is not always appreciated that LC cir- cuits may be used for generating low frequencies. The propos...

1-07-1988 | 0 SINGLE-CHIP 150 W AF POWER AMPLIFIER The Type LM12 operational amplifier from National Semiconductor has at least one remarkable character...