Simple MOSFET amp. (Pre-amp is hypothetical only). I think I got 4W from 24V @ about 0.7A. Very cheap, wide tolerance parts, e Date: 02/24/2007
Power soak for 4 ohm system (e.g. 4W->0.25W) Date: 02/27/2007
A simple inductance meter Date: 03/07/2007
The method for using the inductance meter Date: 03/07/2007
A simple, stable sine wave generator, based on a CD4049UBE Date: 03/18/2007
A CMOS-based circuit capable of very mild overdrive as well as solid tube-like distortion. Date: 07/10/2007
PCB of the "Smootho-o-matic" CD4049-based overdrive/distortion. Date: 07/16/2007
Overlay for the "Smooth-o-matic". Date: 07/16/2007
Schematic of the "Smooth-o-matic". Date: 07/16/2007
My Noisey Cricket mk II. Nice... Date: 08/19/2007
Smooth-o-matic input. Date: 08/19/2007
Smooth-o-matic output (gain at 50%) Date: 08/19/2007
Smooth-o-matic output (gain at 80%) Date: 08/19/2007
Modulatron sch Modulatron schematic. This sounds like a ring modulator. Date: 11/04/2007 Modulatron schematic. This sounds like a ring modulator.
Modulatron pcb PCB for the Modulatron Date: 11/04/2007 PCB for the Modulatron
Modulatron overlay Overlay for the Modulatron. Date: 11/04/2007 Overlay for the Modulatron.
Hidrosis SCH Hidrosis (update/improved MFZ-1) Date: 11/21/2007 Hidrosis (update/improved MFZ-1)
Hidrosis PCB Hidrosis PCB Date: 11/21/2007 Hidrosis PCB
Hidrosis Overlay Hidrosis overlay Date: 11/21/2007 Hidrosis overlay
Tug-o-war schematic Schematic of the NPN-PNP pair in "The tubey" Date: 01/01/2008 Schematic of the NPN-PNP pair in "The tubey"
ALF_tubey_output Output from "the tubey" Date: 01/01/2008 Output from "the tubey"
Triodulator Draft 12AX7 amp emulator circuit Date: 01/07/2008 Draft 12AX7 amp emulator circuit
Triode triode Low voltage tube drive (for 12AU7 or 12U7, maybe 12AT7) Date: 01/12/2008 Low voltage tube drive (for 12AU7 or 12U7, maybe 12AT7)
12au7_200mV_1Vunits_small Triode triode output (12AU7, 200mV input) Date: 01/01/2004 Triode triode output (12AU7, 200mV input)
12au7_500mV_1Vunits_small Triode triode output (12AU7, 500mV input) Date: 01/01/2004 Triode triode output (12AU7, 500mV input)
12u7_200mV_1Vunits_small 12U7 (low voltage dual triode), 200mV input Date: 01/01/2004 12U7 (low voltage dual triode), 200mV input
12ax7_200mV_1Vunits_small 12AX7, 200mV input
(ALL PHOTOS HAVE 1V/GRID UNIT) Date: 01/01/2004 12AX7, 200mV input
(ALL PHOTOS HAVE 1V/GRID UNIT)
Improved ring modulator Ring modulator idea Date: 02/26/2008 Ring modulator idea
Top and back -cover off Date: 04/30/2005
Top -cover off Date: 04/30/2005
Top -cover on Date: 04/30/2005
Low_front Date: 09/04/2008
Front_detail Date: 09/04/2008
Opamps in EMI meter Amplifier and integrator of em signal Date: 02/05/2009 Amplifier and integrator of em signal
Simple Aliaser SCH First cut at a simple aliaser Date: 05/30/2009 First cut at a simple aliaser
Simple Aliaser overlay Overlay Date: 05/30/2009 Overlay
Simple Aliaser PCB Aliaser PCB Date: 05/30/2009 Aliaser PCB
Oscillator sch Simple VLF oscillator Date: 05/31/2009 Simple VLF oscillator
Oscillator from Silicon Chip VLF oscillator from an old electronics magazine. Date: 06/01/2009 VLF oscillator from an old electronics magazine.
Oscillator text from Silicon Chip article Text accompanying the VLF oscillator schematic. Date: 06/01/2009 Text accompanying the VLF oscillator schematic.
Simple MOSFET compressor_small Simple MOSFET compressor Date: 06/13/2009 Simple MOSFET compressor
amp-rectifier-integrator circuit Amp-rectifier-integrator thing. Would it work? Date: 06/17/2009 Amp-rectifier-integrator thing. Would it work?
Doug's fuzz SPICE output LTSpice analysis of fuzz frequency response. Date: 08/04/2009 LTSpice analysis of fuzz frequency response.
Doug Deeper Fuzz PCB PCB for Doug Deeper's buzzy fuzz Date: 08/05/2009 PCB for Doug Deeper's buzzy fuzz
Doug Deeper Fuzz Layout for Doug Deeper's buzzy fuzz (mounted on the volume pot). Date: 08/05/2009 Layout for Doug Deeper's buzzy fuzz (mounted on the volume pot).
Octavium grandis schematic UNTESTED octave up design Date: 08/25/2009 UNTESTED octave up design
Octavium grandis overlay UNTESTED O. grandis overlay Date: 08/25/2009 UNTESTED O. grandis overlay
Octavium grandis PCB UNTESTED O. grandis PCB Date: 08/25/2009 UNTESTED O. grandis PCB
Ferret FUZZ waveforms The beauty of electronics and mathematics. Date: 09/14/2009 The beauty of electronics and mathematics.
Fuzz with no name schematic This is a SPICED but otherwise untested fuzz. It has no name. Transistors = low noise, such as 2N3904 or 2N2222A. Date: 03/03/2010 This is a SPICED but otherwise untested fuzz. It has no name. Transistors = low noise, such as 2N3904 or 2N2222A.
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