Elektor Team (9535)

1-07-1986 | 14 SS"ETALARM RIO TO BC557B T2 80539 C2 oon CI D9 C3 100n RI2 D•• ICE C. M80 100 V 16V pti 52 RESET ALARM 05 C8 I=1 mmi 1°:;: car burgl...

1-07-1986 | EE 76 July/August 1986 1508-bit ADC Before any analogue voltage can be measured and subsequently pro- cessed by a computer, a converter devi...

1-07-1986 | 1511versatile timer This simple-looking circuit enables the arbitrary programming of seven outputs in a series of not more than 2048 (211) s...

1-07-1986 | Leafing through some electronics magazines published over the past few years, it is surprising how fast and vigorous digital techniques have...

1-07-1986 | 53 electronic rotary switch Sooner or later, most types of frequently used multi-way rotary switches develop contact resistance instability...

1-07-1986 | up/down clock generator 154 1 R7 Various designs of clock generators have appeared in previous Summer Circuits issues of Elektor Elec- troni...

1-07-1986 | EE 80 July/August 1986 155narrow-band IF filter Since good crystal filters are expens- ive, there is a constant search for (less expensive)...

1-07-1986 | G Schumann 561current indicator P1 1 O ® 1 = input 2 = limiting circuit 3 = ground 4 = reference voltage 5= output 6 = ground - 35-40V ICI...

1-07-1986 | The proposed circuit is intended for use by modellers at railway cross- ings, work in progress, advertising boards, and many others. It can...

1-07-1986 | EE 82 July/August 1986 58 Integrated 3-pin voltage regulators are not suitable for use where the in- put and output voltages are nearly equa...