relay delay for 5 minutes

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STD relay delay for 5 minutes

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Update time： 2022-08-26 16:09:53

Creation time： 2019-12-31 08:53:46

Description

On delay relay. Based on transformerless power supplies, NE555 timer and 12 volt relay. The delay time is adjusted using R3 & C3 according to the formula: T = 1.1 * R3 * C3 = 351560 (5.8 min)

Design Drawing

schematic diagram

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Relay delay for 5 minutes
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PCB

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Relay delay for 5 min - PCB
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BOM

BOM download Purchase Parts

ID	Name	Designator	Footprint	Quantity	BOM_Manufacturer Part
1	1uF	C1	CAP-TH_L29.0-W15.5-P27.50-D1.4	1	225J 630V
2	10mF/250v	C2	CAP-TH_BD10.0-P5.00-D1.0-FD	1	ULR687M1EG1BRRX0CR
3	47uF	C3	CAP-TH_BD6.3-P2.50-D1.0-FD	1	EEUFR1H470
4	DG301-5.0-3P	CN1	SCREW_TERMINAL_DG301-5.0-03P	1	DG301-5.0-03P-12-00A(H)
5	DB107-BP	D1	DIO-BG-TH_DB-1	1	DB107-BP
6	1N4007_C402311	D2	DO-41_BD2.4-L4.7-P8.70-D0.9-RD	1	1N4007
7	1N5349BRLG	D3	DO-27_BD3.5-L8.6-P12.60-D1.3-RD	1	1N5349BRLG
8	1N4007	D4	DO-41_BD2.4-L4.7-P8.70-D0.9-RD	1	1N4007
9	FUSE 0.315A	F1	5X20-BLX-A	1	5x20 BLX-Atype Fuse holder XC-7
10	DG300-5.0-2P	P1	DG300-5.0-02	1	DG300-5.0-2P
11	1MoM	R1	RES-TH_D1.00-L10.50-W3.60-PITCH15.00	1	MFR0S2F8202A50
12	6.8MoM	R3	1206	1	1206W4J0000T5E
13	SRD-12VDC-SL-C	RELAY1	RELAY-TH_SRD-XXVDC-XL-C	1	SRD-12VDC-SL-C
14	NE555P	U2	DIP-8_L9.8-W6.6-P2.54-LS7.6-BL	1	NE555P