Hardware development

Design resources:

XFig library for PCB layout	.tar.bz2 \| .zip
XFig library for schematic capture	.tar.bz2 \| .zip

Audio

	#1	v1.0, 24/06/2008
	A 60W linear audio amplifier module

	#2	v1.0, 25/06/2008
	A fourth order Linkwitz-Riley highpass filter module

	#3	v1.0, 26/06/2008
	A balanced line receiver module

	#4	v1.0, 26/06/2008
	A four input, noninverting summing amplifier module

	#6	v1.0, 14/06/2009
	A fourth order Linkwitz-Riley lowpass filter.

	#7	v1.0, 14/06/2009
	A second order allpass filter for delay correction of active crossovers.

	#18	v1.0, 05/07/2009
	A 20W audio amplifier module.

	#12	v1.0, 19/07/2009
	A single channel headphone amplifier module.

	#15	v1.0, 19/07/2009
	A balanced microphone preamplifier module.

Power supply

	#16	v1.0, 30/05/2009
	A 1A split rail linear voltage regulator module

	#17	v1.0, 19/07/2009
	An unregulated 3A split-rail power supply module

	#20	v1.0, 10/11/2009
	A low-power voltage inverter module

	#22	v1.0, 23/05/2010
	A 10A rectifier module with AC input fuses and diode snubbers

	#23	v1.0, 25/05/2010
	A 3A split-rail power supply module with regulated auxiliary outputs

	#24	v1.0, 27/06/2010
	A capacitor bank for high current power supplies

	#5	v1.0, 15/05/2011
	A 200W linear shunt regulator for 12V PV systems