**Circuit diagram - audio oscillator**

Hi guys,

I got a circuit description of an audio oscillator which goes on as follows:

"Transistor T-1 working as a pre amplifier whose output from collector is fed to the base of T-2

and finally its output from collector connected to the speaker. Capacitor C-1 and R-1 give a feedback current to T-1 when T-1 gets biased through switch it energizes T- 2 which completes the circuit."

The components used in this circuit are as follows:

**T1-SILICON TRANSISTOR (NPN) [BC 547]**

T2-SILICON TRANSISTOR (PNP) [BC 558]

C1-0.02 CERAMIC CAPACITOR

R1-330 KILO OHM RESISTANCE

R2-10 KILO OHM RESISTANCE

SPEAKER-8 OHMS

BATTERY - 3V DC

T2-SILICON TRANSISTOR (PNP) [BC 558]

C1-0.02 CERAMIC CAPACITOR

R1-330 KILO OHM RESISTANCE

R2-10 KILO OHM RESISTANCE

SPEAKER-8 OHMS

BATTERY - 3V DC

Can anyone please advise me about the circuit diagram? Please also tell me other important details about working with the above devices.

Thanks in advance.

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