Electronic Switch with Delay Time For Lambs

Electronic Switch with Delay Time For Lambs

elect_timer_switch_for_lamb1.gif (21827 bytes)

�� . �� . �� , �� , �� J3. � �� [Fig2]. �� . �� , �� , �� J1. �� Led �� , �� . �� , �� . �� J2 �� S2 �� Led D9, � �� . �� Led �� optocoupler IC1 �� IC2A, � �� High. � �� C3 �� D2 �� . � �� IC2B �� Low � �� IC2C �� High. �� Q1 �� RL1. �� , �� C2. �� IC2A �� Low, � C2 �� R5 �� TR1. �� TR1 �� C2, �� RL1 �� . � �� C2, R5 �� TR1. � �� optocoupler �� IC2A.

�� +12V dc. �� S1 �� .

� D15 �� , �� D12 �� RL1 �� . �� . � �� RL1 �� . �� .

��, �� , �� .

		.
		Part List
R1=See Text and Table1-2		C3=10uF 25V		D4=1N4148
R2-3-7-8=1K 1/4W 5%		C6=1000uF 35V		J1-2=3pin 3.96mm pin step Connector
R4=10K 1/4W 5%		IC1=4N35 or Similar Optocoupler		J3=8pin Connector with Screws
R5=470K 1/4W 5%		IC2=4093 CMos		RL1=12V Relay with 2, 3 or 6 contacts
R6=33K 1/4W 5%		IC3=7812 Regulator 1A		S1=On/Off MicroSwitch 1A
TR1=1M Trimmer		Q1=BD679 Darlington		S2.......6=Push Button [See Text]
C1-4-5=100nF 63V MKT 5%		D1-2-3-6....9=1N4002		T1=110-230Vac @12V 2A Transformer
C2=4.7uF 25V		D4-10-11-12-13-14-15=Red Led 3mm or 5mm

.
	Table 1 [Leds ��]		Table 2 [Leds �� ]
		�� R1

	For Exable: 5 �� 5 Red Leds 3mm ��.		For Exable: 5 �� 5 Red Leds 3mm �� .


	P=V.I=10.2V x 0.05A=0.5W		P=V.I=3V x 0.01A=0.03W
	Idt= Id X (Number of Leds)		Vdt=Vd X (Number of Leds)

		Red Led 3mm Id=10mA Vp=12V Vd=1.8V
		Red Led 5mm Id=20mA Vp=12V Vd=1.8V
.

�� Led �� .

�� Fig.2-3 �� Led �� . �� Fig.2 �� Led �� , �� . �� R1 �� Table1. � �� Led �� Fig.3 �� R1 �� Table2. �� Led �� .

elect_timer_switch_for_lamb2.gif (7327 bytes)

�� .

�� Fig.3,4,5. �� Fig.3 �� , �� Sw �� . �� Sw �� . �� Sw �� .

elect_timer_switch_for_lamb3.gif (6150 bytes) elect_timer_switch_for_lamb4.gif (4898 bytes) elect_timer_switch_for_lamb5.gif (4486 bytes)

elect_timer_switch_for_lamb6.gif (2206 bytes)

�� Led �� .

Sam Electronic Circuits 8/04

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