About the article

Goodbye Standby

Goodbye Standby

Energy saving has been a hot topic for some forty years now. In the early years the focus of public, political and specialist attention was on the large-scale users of energy, but now attention is also turning to the much more numerous smaller-scale users, on the principle that ‘many a mickle makes a muckle’.

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Gerber file

CAM/CAD data for the PCB referred to in this article is available as a Gerber file. Elektor GREEN and GOLD members can exclusively download these files for free as part of their membership. Gerber files allow a PCB to be produced on an appropriate device available locally, or through an online PCB manufacturing service.

Elektor recommends its business partner Eurocircuits as the company of choice for its own prototypes and volume production in selected cases.

Component list
R1 = 1MOhm
R2 = 1.5kOhm
C1 = 1.5µF 400V, MKT, pitch 15 or 22.5 or 27.5 mm
C2 = 10µF 63V, radial, pitch 2.5mm, diam. 6.3mm
C3 = 22µF 40V, radial, pitch 2.5mm, diam. 6.3mm
C4 = 10nF, pitch 5 or 7.5mm
C5,C8 = 100nF, pitch 5 or 7.5mm
C6 = 1µF 63V, radial, pitch 2.5mm, diam. 6.3mm
C7 = 100µF 40V, pitch 2.5mm, diam. 8.5mm
C9,C10,C11,C12 = 10nF, ceramic, pitch 5mm
D1–D8,D12–D15 = 1N4004
D9 = LED, red
D10 = 1N4148
D11 = LED, green
IC1 = CNY17 (DIP6)
IC2 = NE555 (DIP8)
IC3 = LM78L12
K1,K2 = RJ-11, PCB mount (4 or 6-pin)
K3,K4 = 2-way PCB screw terminal, pitch 7.5mm
JP1,JP2,JP3 = 3-pin pinheader, pitch 0.1 inch, w. jumper
JP4 = 1 wire link for 230VAC or 2 wire links for 115VAC (see text)
RE1 = Panasonic DE2a-L2-12V, 2 8 A/250 VAC contacts, 2 720 Ohm/12 V coils, bistable
S1 = pushbutton, 1 make contact, 1 A
TR1 = power transformer, AVB0,5/2/6, 2x115 V primary, 2x6 V secondary, 0.5 VA
PCB # 091046
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