I have designed this circuit using a 555 that allows you to control the frequency of the pulse wave output with four switches. Here is a link to an online simulation of the circuit: http://tinyurl.com/yd6mdnc6
In the circuit, the transistor is used kind of like a variable resistor. My question is, with the transistor in the configuration shown in the circuit, how do I calculate the resistance across it? (As if it were, in fact, just a resistor.)
In the circuit, the transistor is used kind of like a variable resistor. My question is, with the transistor in the configuration shown in the circuit, how do I calculate the resistance across it? (As if it were, in fact, just a resistor.)