Fullscreen HTML5Med Res (??MB)HTML4

Advertising Index Circuit Ideas Wanted Do you have a good circuit idea? If so, sketch it out, write a brief description of its operation & send it to us. Provided your idea is workable & original, we’ll publish it in Circuit Notebook & you’ll make some money. We pay up to $100 for a good circuit so send your idea to: Silicon Chip Publications, PO Box 139, Collaroy, NSW 2097. DOWNLOAD OUR CATALOG at www.iinet.net.au/~worcom WORLDWIDE ELECTRONIC COMPONENTS PO Box 631, Hillarys, WA 6923 Ph: (08) 9307 7305 Fax: (08) 9307 7309 Email: worcom<at>iinet.net.au MEAN WELL Power Supplies On The Net www.radioandelectronics.com Ph: 1300 495 211 Fax 08 9402 1287 Email: sales<at>radioandelectronics.com PO Box 780, Hillarys, WA 6923 Phono Cartridge Loading Capacitance Is Important . . . continued from page106 this “real life” measurement of the Ortofon VMS20EMkll and Luxman L-410. The capacitive loading is around 470pF, as per your estimation, while resistive loading is 47kΩ. I used the Hi Fi News Test Record pink noise track for the input and the output fed into the True RTA software (thanks for the great recommendation in October 2011 SILICON CHIP!). The signal path is from the 112  Silicon Chip cartridge via phono direct input (which excludes tone and balance controls) and the speaker terminals have 8Ω resistive loads. The resulting RTA plot is attached (see above). As you can see, the frequency response extends to 20kHz which is well above the electrical simulation and supports the theory that the mechanical (cantilever) efSC fect is significant. Altronics...................................... 88-91 Agilent Technologies........................ 76 Aust. Valve Audio Transformers...... 111 Avcomm........................................... 77 Baskiville.com.................................... 5 Cleverscope..................................... 74 Bitscope........................................... 39 Digi-Key Corporation.......................... 3 Dyne Industries................................ 12 Ecoswitch......................................... 76 Element14........................................ 17 Emona Instruments.......................... 49 Futurlec............................................ 74 Geoff Coppa.................................. 111 Gless Audio...................................... 75 Grantronics.................................... 111 Harbuch Electronics........................... 6 Hare & Forbes.................................. 47 HK Wentworth.................................. 12 Instant PCBs.................................. 111 Jaycar ................................. IFC,53-60 Jimojo.............................................. 73 Keith Rippon.................................. 111 Kitstop.............................................. 73 LED Sales...................................... 111 LHP.NET.AU................................... IBC Measurement Innovation................. 76 Microchip Technology....................... 65 Mikroelectronika................................. 7 Mouser Electronics...................... OBC National Electronic Manufacturing... 13 Oatley Electronics............................ 75 Ocean Controls.............................. 105 Ozcomfile......................................... 77 Prime Electronics............................. 43 Quest Electronics........................... 111 Radio & Electronics....................... 112 Rev-Bikes......................................... 73 RF Modules.............................. 71,112 Rockby Electronics.......................... 85 Sesame Electronics....................... 111 Silicon Chip Binders....................... 111 Silicon Chip Bookshop............ 108-109 Silicon Chip Order Form................ 110 Silicon Chip PCBs................... 107,111 Siomar Battery Engineering...... 11,111 Soundlabs Group............................. 74 Splat Controls................................ 111 Switchmode Power Supplies............ 51 Tekmark........................................... 75 Telelink Communications................. 77 Tenrod Pty Ltd.................................... 9 Truscotts Electronic World............. 111 VAF Research........................ 73,74,76 Wiltronics......................................... 10 Worldwide Elect. Components....... 112 siliconchip.com.au