Initial power-up
When circuit is first powered up, transistor will not be switched on. But, this means that at this stage they will have both high base voltages and thus a tendency to switch on, and inevitable slight asymmetries will mean that 1 of the transistors is 1st to switch on. This will rapidly put the circuit into 1 of the above states, and oscillation will ensue. In practice, oscillation always takes place for practical values of R and C.
But, if the circuit is temporarily held with both bases high, for longer time than it takes for both the capacitors to charge fully, then the circuit will remain in stable state, with both the bases at 0.6 V, both the collectors at 0 V, and both the capacitors charged backwards to -0.6 V. This can occur at begning without external intervention, if R and C are both small. For instance, a 10 MHz oscillator of this type will be unreliable.
Email based Electronics Devices and circuits assignment help - homework help at Expertsmind
Are you searching Electronics Engineering assignment help expert for help with Initial power-up questions? Initial power-up topic is not easier to learn without any external help? We at www.expertsmind.com offers free lecture notes for Electronics Devices and circuits assignment help and Electronics Devices and circuits homework help. Live tutors are available 24x7 hours for helping students in their Initial power-up related problems. We provide step by step Initial power-up question's answers with 100% plagiarism free content. We prepare quality content and notes for Initial power-up topic under Electronics Devices and circuits theory and study material. These are avail for subscribed users and they can get advantages anytime.
Why Expertsmind for assignment help
- Higher degree holder and experienced experts network
- Punctuality and responsibility of work
- Quality solution with 100% plagiarism free answers
- Time on Delivery
- Privacy of information and details
- Excellence in solving electronics engineering questions in excels and word format.
- Best tutoring assistance 24x7 hours