garden path lighting

IC4 78 LO8 I CT T,P Plant a new bulb in your garden! This circuit will lead you up the garden path at night in safety. It enables the path to be illuminated whenever required, and it consumes very little energy. The lamp is switched on by reed switches, mounted in the front door and in the garden gate. By using a 24 V lorry bulb, electrical installation remains simple and safe while ensuring suf- ficient light. The circuit is powered from the secondary of a 24 ... 30 V/5 A trans- former. Where long leads through the garden are a necessity the higher rating is preferable due to the voltage drop caused by the resistance of the leads. The 50 Hz signal from the trans- former is fed to the base of T2 which converts it into a squarewave. This is then gated by N2 to provide the clock signal for the counter IC2, for as long as Q14 remains low. As soon as Q14 goes high the clock signal is . T5 form 24 V 36 W 30V 5A •CI 6,3AT 80583 blocked. Transistors T3 a zero-crossing detector which is...