Elektor Team (9510)

1-07-1989 | Common 789 456 123 N1...N4=IC1 = 4070 N5...N8 = IC2 = 4070 KO 9 K8 8 :75 21 D 44 1C2 0 0 r m02 D3 D4 .114 "14 Rs111 R70 98 ei R9 12V BC557 B...

1-07-1989 | DI di, 1 D2 • clk 2 D3 air 2 D9 • relay 1:15 • XI • 0000 0 0 BC 547 044 X Y PLOTTER INTERFACE N1.-N4 =ICI = 7400 N5...N8= IC2 = 7086...

1-07-1989 | *see text R1 045 TIMER WITH AUDIBLE WARNING RESET VI EMI ZIT) id 1 2 P1 * R2 5008 CAI9 220n 9V R3 c2 O Applications of this little circuit i...

1-07-1989 | 046 HCMOS SQUARE WAVE GENERATOR This pulse generator supplies three rectangular output signals with a duty factor of 0.5. The signals have a...

1-07-1989 | 047 HIGH-POWER ZENER DIODE Although its regulation characteristics are not as good as those of an integrated voltage regulator, a high-power...

1-07-1989 | TEST & MEASUREMENT 048 VOLTAGE-CONTROLLED OSCILLATOR A1,A2 = 1C2 = TL072 N1...N4 =1C3 = 4071 T 00® T On e5V 894100 • 11 The voltage-contr...

1-07-1989 | COMPUTERS 049 MONITORING TEMPERATURE WITH THE C64 Maplin"s module Type FE33L provides an inexpensive and convenient means of monitoring temp...

1-07-1989 | 050 SIMPLE VARIABLE POWER SUPPLY This low-cost power supply has an output voltage range of 1.5-15 V at a maximum current of 500 mA. Regulati...

1-07-1989 | 051 GENERAL INTEREST D4 11441 48 I S1 15 09 013 1C3 4060 PI 0 5V 0 Bz O R8 680n BC547B 11•111•11 894071 - 11 DL TOnTOOR 16V 03 Re1 1N414...

1-07-1989 | 052 IMPROVED LOW FUEL INDICATOR The indicator described here obviates the flickering of the "low fuel" warning light on the dashboard caused...