I have 1/2 TS556 left and would like to make adjustable frequency oscillator 40...75 Hz. There is a catch of course - duty cycle 50% (+- 10%), but most important duty cycle should stay stable (few percent error max) during frequency adjustment over full range. Is this goal achivable with hysteretic circuit?
Another question is about small signal npn transistors. For most small signal npn transistors base-emitter saturation voltage is about 0,6-0,8V. Does npn transistors with lower (close to 0,1V) base-emitter saturation voltages exists (Vce min 10V)?
Another question is about small signal npn transistors. For most small signal npn transistors base-emitter saturation voltage is about 0,6-0,8V. Does npn transistors with lower (close to 0,1V) base-emitter saturation voltages exists (Vce min 10V)?