| P 1 R9 12V R4 039 ENERGY CONTROL FOR BATTERY CHARGERS R3 85 11 01C2 D2 D3IRef 1C1 rr= P2 T2 50k R6 R2 00 50k BC517 T1 2 ROR7 1% 9. 10* BC517...
Elektor Team (9504)
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| 040 TEST & MEASUREMENT The Type LTC1042 lc from Linear Technology is a window comparator that can function with very small currents. This is...
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| 041 CAR ELECTRONICS The car alarm accepts signals from a variety of sources, includ- ing special sensors and the standard switches in a car,...
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| 042 This inexpensive unit switches the light on at dusk and off again at dawn. The circuit has separate time bases for the on and off delays...
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| 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...
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| 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...
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| *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...
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| 046 HCMOS SQUARE WAVE GENERATOR This pulse generator supplies three rectangular output signals with a duty factor of 0.5. The signals have a...
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| 047 HIGH-POWER ZENER DIODE Although its regulation characteristics are not as good as those of an integrated voltage regulator, a high-power...
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| TEST & MEASUREMENT 048 VOLTAGE-CONTROLLED OSCILLATOR A1,A2 = 1C2 = TL072 N1...N4 =1C3 = 4071 T 00® T On e5V 894100 • 11 The voltage-contr...