Anti-Standby Switch
Also works with a remote control!
Published in issue 373, January 2008
Energy Saving may well be a must-have feature for home entertainment products sold today but there are still millions of older and even not-so-old appliances that are guzzling far too much juice in the all too convenient standby mode. The anti-standby switch described here saves the planet’s energy—and yours too!
Resistors
R1,R3 = 820Ω
R2 = 3kΩ3
R4 = 2kΩ4, 1%
R5,R6,R7,R10 = 10kΩ
R8 = 2kΩ2
R9 = 220kΩ
R11 = 470kΩ
R12 = 1kΩ8
R13 = 100Ω
R14 = 220Ω
R15 = 22kΩ
P1 = 47kΩ
Capacitors
C1 = 100nF (250VAC)
C2,C4 = 470µF (16V)
C3,C11 = 10µF (16V)
C5 = 100µF (16V)
C6,C7,C9,C10 = 100nF (63V)
C8 = 220nF (63V)
C12 = 10nF (63V)
Semiconductors
D1,D2 = BAT43 (Schottky)
LED1 = LED, 5 mm, red
Br1 = B40C800, round case, 40V piv, 0.8A)
IC1 = LM317T (T0220 case)
IC2 = LM337T (T0220 case)
IC3 = MC34151
IC4 = ATtiny25-10V*, programmed, order code 070797-41 from Elektor Shop
IC5 = TSOP 1736 (36 kHz IR-receiver*)
IC6 = TLC272 or TL062*
Miscellaneous
F1 = fuse 3.15AT (slow) with PCB mount holder and cap
Re1 = 12V bistable* (1 x co) with 16-A contact, e.g. Finder # 40.61.6 12V (www.reichelt.de)
S1 = pushbutton, 1 make contact
Tr1 = mains transformer, 2×7.5V* @ 1.5 VA
Tr2 = 2A ring-core suppressor coil (with 4 turns 0.5 mm2)*
K1,K2 = 3-way PCN terminal block
K3 = 6-way DIL pinheader (2×3 pins)
PCB, order code 070797-1 from the Elektor Shop
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Click below to download a PDF copy of this article from Elektor magazine. Please note. In view of the complexity of international markets, Elektor cannot guarantee the availability of components for this project.
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