MIMF

Hi Mark , the chip, once cleared of the bullet proof resin, had no markings . I figure it had been sanded off. The best guess is a LM386. I built a copy of the curcuit using a 386 , had to improvise on the inductors ,but hey it worked. There will have to be a bit of fine tuning. I intend to use this...

Hi again , forgot to label pin 8---pin 1 connects to pin 8 via a 10 ufd cap.

Hi --for those interested , i recently took apart an ebow (messy job) and the following was revealed.

Hi , for what it's worth there is a general purpose relay i've used to make p/u's.
Omron Electronics mfg part number GSR-1-S DC24---1K dc resistance and 2.25 H inductance.
Bought mine through RS Components $AU9.00. takes a few minutes to remove the coil , but hey worked for me.
Regards
Geoff

Hi Veronica , thanks for your input. I've just bought a Red Lion sensor and that outputs between 200mv to 1.5v +. The PU is mounted about 100mm from the bridge an string clearance about 1.5 mm. The whole idea of this little project was to use passive components to add some flavour to a single note. ...

Hi Greg , the passive ccts i want to use are ring mods , freq triplers , diode clippers all on board and no active preamps---no batteries and all done with one string. The vr sensor appealed to me because of cost and size---still yet to check output again. All these ccts will cost output voltage , b...

Hi Greg , i have pm Mark Swanson with full name. Maybe i should check again-----maybe range switch in wrong position---DOH. The reason i want high output is to drive passive ccts that will have their own losses. I'm trying to avoid batteries. I'll press on experimenting----its the best fun you can h...

Hi Alan , thanks for your reply. I have been messing with one (industrial speed sensor) with view to using it for a one string instrument. Tried the one i had with a string , a=110hz and got about 450mv with a good pick , but thought there may be others out there that have used other types with more...

Hi All , has anyone used a VR sensor for a pickup? If so----any pros and cons.
Regards
Spuddo