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This is only a preview of the April 2012 issue of Silicon Chip. You can view 24 of the 96 pages in the full issue, including the advertisments. For full access, purchase the issue for $10.00 or subscribe for access to the latest issues. Items relevant to "1.5kW Induction Motor Speed Controller, Pt.1":
Items relevant to "SoftStarter: Taming The Surge Current Menace":
Items relevant to "A 6-Decade Resistance Substitution Box":
Items relevant to "Ultra-LD Mk.3 135W/Channel Stereo Amplifier, Pt.2":
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Advertising Index
Altronics.................................... 76-79
Amateur Scientist CD..................... 87
Avcomm......................................... 95
Bitscope......................................... 27
Cleverscope..................................... 6
Dyne Industries.............................. 12
Emona Instruments.......................... 8
Futurlec............................................ 6
Geoff Coppa................................... 95
Grantronics.................................... 95
Harbuch Electronics......................... 8
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Ask SILICON CHIP
. . . continued from p94
positive rail filter capacitor due to
other circuitry in the Studio Series
Preamplifier.
Fan cooling
for inverter
I have acquired a solar kit out of
the February 2008 issue, Oatley Kit
K251A. It’s for a battery charger but I
wish to use the solar panel to drive a
cooling fan to cool my PV inverter –
obviously for free, ie, sun comes out
Circuit Ideas Wanted
Hare & Forbes............................ OBC
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to Circuit Notebook, or you could win
a$150 gift voucher.
Silicon Chip Publications, PO Box 139,
Collaroy, NSW 2097.
Jaycar ................................ IFC,45-52
and my PV-powered fans start, sun sets
and the fans stop. Was there a modification to this circuit to make it a PV
power regulator rather than a battery
charger? (P. D., via email).
• The Solar Power Regulator from
February 2008 SILICON CHIP can be
used to drive a fan instead of being
used as a battery charger. The circuit
delivers a nominal 13.8V regulated
supply when the solar panel is working, sufficient to drive the fan
You could reduce the supply for a
12V fan by changing zener diode ZD1
to a 10V version, instead of the original
SC
12V, to set the output at 11.8V.
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Instant PCBs.................................. 95
Keith Rippon................................... 95
Kitstop............................................ 75
LED Sales...................................... 95
LHP.NET.AU................................. IBC
Measurement Innovation................ 75
Microbee Technology..................... 95
Microchip Technology....................... 3
Mikroelektronika............................... 9
National Electronic Manufacturing.. 13
Oatley Electronics.......................... 33
Ocean Controls.............................. 91
Premier Batteries........................... 73
Quest Electronics........................... 95
Radio & Hobbies DVD.................... 93
RF Modules.................................... 96
Roc-Solid......................................... 5
Rohde & Schwarz.......................... 67
Sesame Electronics....................... 95
Sethna Electronics......................... 95
Silicon Chip Binders....................... 96
Silicon Chip Bookshop................... 69
Silicon Chip Order Form................ 89
Silicon Chip Partshop..................... 88
Silicon Chip Subscriptions............. 14
Siomar Battery Engineering...... 10,95
Splat Controls................................ 95
Switchmode Power Supplies.......... 57
Tekmark......................................... 12
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Wiltronics....................................... 15
96 Silicon Chip
Truscotts Electronic World.............. 95
Vicom............................................. 11
Worldwide Elect. Components....... 96
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