T&L Publications

What is the model number and company name of this chip that can play midi file?

Where can I find electronic circuit for midi player?
I'd like to implement a music box that can play midi when it is opened.

We can find MP3 player, but Midi player.
Where can I find Midi player in the market?
Or, How to do it by ourselves?
Any circuit existence?

I am looking for a circuit that applies in brain signal measurement.
any suggestion?

I was confused in this transform. I try to measure the value of inductance in transform. I got 306uH, 22uH, 1.06H respectively. But, I caculate the ratio of voltage depend on sqart(L1/L2) formulation. It is fail, the measurement of result didn't correspond to the result from formula. Refer to, http:...

I am doing a research in electronic flap for mosquito and fly. But, I was confused in this circuit. Please refer to http://user52.starbeta.org/others/flap-e.doc What is the role of transformer(left side have 2 sets) in circuit? Does it(2 sets in left side of Transform) influence(reaction) each other...