Schematics > Oscillators and timers > Reverse Bias Oscillator
Reverse Bias Oscillator
There are a number of npn transistors that will oscillate in the audio range
when reverse biased. Minimum supply voltage is 7V for low power transistors such
as BC109, BC238 and 2N2222A, it becomes 12V for medium power transistors such as
BD139 and is 16V for power transistors as BUX22 and 2N6543. Current drain is 4mA
at 9V and frequency of oscillation is 550Hz. The base is normally left open.
Title: Reverse Bias Oscillator
Source: www.electronics-lab.com
Published on: 2005-02-03
Reads: 457
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