Ingredients

  • 1 lm358
  • 3 condensatore .01uF
  • 2 resistenza 100kohm
  • 3 resistenza 10kohm
  • 2 condensatore 10pf
  • 2 resistenza 22k
  • 2 resistenza 47k
  • 1 zoccolo dil 8pin (4+4)
  • 1 basetta prestampata

Info box

  • Preparation:
  • Difficulty: media
  • Tags: clock, radio, rf, sinuosoide
  • Source: dal libro di elettronica
Wien_bridge_oscillator.png 0-8caa9139-255.jpg MN2_5.jpg oscilloscopi_usati.jpg

Fase 1

This circuit produces an extremely low distortion sine-wave, in spite of the non-linear
devices used for amplitude limiting (D1 and D2). The reason is first that distortion
(harmonics) are fed to the minus input of the opamp with far less loss than to the plus
input, severely attenuating them. Second, a Wien bridge oscillator requires a gain of
exactly 3.00. No more and no less. For lowest distortion, calculate the minimum and
maximum available gain to just above and just below 3.00. In other words, use as little
amplitude control as possible.

Fase 2

saldare i componenti.
Prima le resistenze, e lo zoccolo, poi i condensatori.
Inserire il chip nello zoccolo ed alimentare a 9v.

Fase 3

Verificare con l'oscilloscopio che il circuito funzioni. Appoggiare la sonda sul pin1 del chip.

1 Comments

Frankenstein Garage Fablab Milano FRANKENSTEIN GARAGE FABLAB MILANO
il May 9, 2013 alle 13:18
l'ho provato e funziona.