Construction One underlying theme of this project is maximum use of recycled materials. Contentious material about living people that is unsourced or poorly sourced must be removed immediately. The improved efficiency of the bridge rectifier over the half wave rectifier allows us to draw about twice the specified half-wave current, or 30 mA. Metronome – A Universal Power supply based on the L regulator, which includes an outboard pass transistor to boost output currents up to 4 amps. Rated for 15 mA DC with half-wave rectifier. Did you miss your activation email. Mini Metronome – Linear scale Small size.

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Turret board is built on surplus GFR4, 0. I found this tester very useful in testing homebuilt soundcard MIDI interface.

Mini Portable Guitar Amplifier – Can be fitted into a packet of cigarettes. Contentious material about living persons that is unsourced or poorly sourced must be removed immediatelyespecially if potentially libelous or harmful.

This simple circuit does the same.

Doug Hammond

Please login or register. Many student projects have a scope of work where using this design is legitimate, like this student project where they tried to write ATAPI drivers.


We have searched the web to help you find quick design ideas. Flavio Dellepiane, fladello tin. Retrieved from ” https: Wiring was remarkably efficient with this layout. View Douglas Hammond s professional profile on LinkedIn. The package drove the layout, which differred quite a bit from my usual style.

From Wikipedia, the free encyclopedia. The topic of this article may not meet Wikipedia’s notability guideline for music.

Musical Circuits free electronic circuit links

He lives and works in LinzAustria. It’s easy to build, easy to set up and easy to play.

An LDR provides a simple way to detect when the lid of the music box is opened. LinkedIn is the world s largest business network, helping professionals like Douglas Hammond discover inside. Musical Ladybug – Our son Henk is fond of small animals – bees, bugs, waterbugs, pntode, hedgehogs, newts, fishes and toads.

I don’t know why it compresses excessively, maybe the screen circuits need to be regulated. The signal from the transducers of these instruments should be buffered and sometimes amplified before Powered by Create your own unique website with customizable templates.


Doug Hammond is on Facebook. I am looking for a better paying full time job. I was self employed doing mechanical repairs until I sold my business in It is loud enough to annoy the family downstairs with all the doors closed. This article has multiple issues.

Com Marshall 18W adapted for use as a distortion hammonr – The Marshall 18W adapted pentpde use as a distortion stompbox.

Pipsqueak pentode DIY guitar amp

Slightly melted volume knob recycled from Fender Vibrolux. With a full wave bridge rectifier feeding a capacitor input filter, HV output is about VDC with no load.

Pentdoe page was last edited on 7 Augustat We make every effort to link to original material posted by the designer. If notability cannot be established, the article is likely to be mergedredirectedor deleted. Contentious material about living people that is unsourced or poorly sourced must be removed immediately.