Do I need a pull up resister at point A? How do I determine the Vbe?
The pnp is the common 3906 The Hall switch is non latching. The circuit works I just want to make sure it is highly robust and reliable.
How high can I go with the Base resistor? Are the currents the only consideration or do things get twitchy if the resistors are at maximums and currents at minimums?
Please deconstruct this simple circuit.
Moderator's Note:
A jpg or gif file will be better than a pdf file when the circuit is so easy, and it will be more easy to see, the pdf already deleted and modified to gif file.
The pnp is the common 3906 The Hall switch is non latching. The circuit works I just want to make sure it is highly robust and reliable.
How high can I go with the Base resistor? Are the currents the only consideration or do things get twitchy if the resistors are at maximums and currents at minimums?
Please deconstruct this simple circuit.
Moderator's Note:
A jpg or gif file will be better than a pdf file when the circuit is so easy, and it will be more easy to see, the pdf already deleted and modified to gif file.