Projects in the February 2001 issue of EPE Magazine | |
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![]() Measures audio amplifier power output via your PC. Acts as an 8 ohm dummy load capable of handling about 100W r.m.s. and displays r.m.s./ peak wattage and peak voltage on screen. Free software is written in Visual Basic 6, and needs Windows 95/ 98/ ME (only) to run. Not suitable for Windows 2000/ NT. |
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![]() another of our "Top Tenner" projects which can be constructed for under £10 ($14). Our simple metronome is 555 based and includes a CMOS logic chip to offer a simple l.e.d. display. Safe and ideal for beginners. |
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Using LM3914 Bargraph LEDs |
Also in this bumper issue The Schmitt Trigger (4) our in-depth series on Schmitt triggers covers Astable, Pulse Width Modulation, triangle waveforms and more; New Technology Update organic l.e.d.s make their appearance; Circuit Surgery voltage multipliers analysed; Net Work (The Internet Page) Netscape 6 takes a bow. |
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