1. Barnaby Walters

    Cheers — I'm not actually trying to bend it (more trying to avoid that!). I'm making a Hurdy Gurdy, and the aluminium shaft will stick out about 1cm from the end, so I want to avoid it bending. As soon as I can access a more powerful lathe, I'll make a stainless steel shaft, but for the moment ally'll have to do.

  2. Planta Telepata

    Materials 2x 33 K resistors 2x100K resistors R2,R3_____68K 1/4W Resistors R4,R6 _____ 280K C1,C2,C6_________4µ7 25V Electrolytic Capacitors C3,C7___________22pF 50V Ceramic Capacitors "No los puse" C4,C5,C8_______220µF 25V Electrolytic Capacitors

    IC1__________NE5532 Low noise Dual Op-amp

    J1____________3.5mm Stereo Jack Socket

    SW1____________SPST Slide or toggle switch

    B1_______________9V PP3 Alkaline battery

    Clip for PP3 Battery

  3. Planta Telepata

    hey, I've got a prototype for an audio amplifier with a NE5522 op-amp- here is the link. http://www.forosdeelectronica.com/f31/amplificador-auriculares-9v-instrumento-18231/ the final circuit is here: http://img209.imageshack.us/img209/5063/head9vawa.gif its in spanish but if you're interested we can chat about it. I made the protoboard and its pretty cool. You can add to the signal an audio input plus the signal from a electric guitar or bass.

    bass, #audio, #amplifier, #headphones, #diy, #electronics