segunda-feira, 6 de abril de 2015
Eu e o Neil a bordo do Fulô, o Elebore, o Já Agora, o Sheerazade e, mais tarde, o Falua (3) largaram d'Alhandra rumo a Valada para passar a Páscoa.
A prometida frota da ANC faltou, e nem sei se fez lá falta, tal era a paz assim:
A motor para os dois lados porque o vento não era grande espingarda, mas foi melhor, muito melhor, do que ter ficado em terra...
Aproveitei também para actualizar a minha contribuição para a navegação segura no Rio, já que outras, oficiais e gratuitas, como pertencem ao pagador de impostos e taxas, teimam em não haver:
O Rio continua sujo, assoreado, mal gerido e a piorar...enfim...
Rio Tejo- Ajudas Não Oficiais à Navegação
sexta-feira, 20 de março de 2015
To build a simple (series) effects loop to add/remove noisy or otherwise malicious components (i.e. crapy bypass pedals) out of the signal chain when not needed.
To add the simplest an purest sounding of all buffers to a simple 3PDT based switcher.
4un. jack sockets
1un. 9V battery snap
1un. 1Mohm resistor
1un. 3k3 to 10k resistor
2un. quality caps (anywhere from .22uF- Higher values means lower frequencies pass. I hear no difference from .47uF onward...)
2un. 390ohm resistors
1un. 3PDT stomp switch
1un. SPST toogle switch
Principle of operation:
1- The signal arrives from the guitar at the input jack;
2- It then enters the FET buffer which provides a high impedance input and a unity gain output signal. Great for driving whatever comes next (be it long cables or lots of true bypass effects).
3- From there it goes into the center of the 3PDT where it gets sent either to the OUTPUT or to the SEND jack
4- If sent to the SEND ith thet travel through whichever is connected to the SEND-RETURN and it is thrown into tht output. Simple.
5- The remaining pole of the 3PDT is used to provide a visible status indication (via one of the LEDs).
6- The toggle switch is used to turn the unit on/off.
The unit can be used as a AB box if the instrument is connected to the INPUT and oune output is pulled from the OUPUT and another from the SEND
The assembly results in a super silent unit that draws very little power and does not (at least to my ears) alter the signal in an audible fashion.
domingo, 22 de fevereiro de 2015
The most used effect in my gear, beside reverb, is a mild overdrive or clean boost.
I've built a few varations on EHX's LPB1 but, honestly, feel a bit ashamed of myself for having to copy such simple circuit and not forcing myself to learn enough about circuit design to conceive my own customized yet functional boost pedal.
So today the quest begins and this post will be the diary of the process. Lets see what happens.
1- REQUIREMENTS (22 Feb 2015)
. High impedance FET input;
. Dual switchable outputs (A/B) box style;
. Switchable effects loop;
. Active tone control;
. Drive and/or fuzz circuit;
. Optical output level regulation,
. Switchable compressor.
So here we go! Keep in touch...
The (still passive) Volume Pedal!
quinta-feira, 26 de junho de 2014
quarta-feira, 25 de junho de 2014
e. Suitable for point-to-point wiring (no PCBs or Veroboard)
terça-feira, 24 de junho de 2014
sexta-feira, 28 de março de 2014
quarta-feira, 26 de março de 2014
Here's the important part for this case:
sábado, 4 de janeiro de 2014
still on a very initial stage (little more that the marine ply box done)
sexta-feira, 29 de novembro de 2013
It's just a straightforward application of TI's datasheet circuit:
Still to do:
- An impedance matching buffer for the CD/MP3 input: http://beavishifi.com/projects/JFET_preamplifier/
- Incorporate the RIAA preamphttp://www.vellemanusa.com/products/view/?country=us&lang=enu&id=350492 in the box:
- Improve the volume control
- Make an output attenuator
domingo, 20 de outubro de 2013
domingo, 14 de julho de 2013
We left Alhandra on the early morning of Saturday 13th to Valada and returned on the 14th arround noon.
The wind was not so great, under 1kt on the way up and arround 5kt on the bow when we came back, so the sails were kept on their covers and the 5hp Tohatsu was our little helper for the trip.
Here´s a few pictures of the trip.
Fulô is now ashore for routine maintenance so no more sailing until August or September...
See you all then