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jbord39
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What would be the best configuration for amplifying output from 555 timer chip? No matter what transistor configuration I cannot get it higher than 30 mA (I am shooting for 200 mA).
Thanks
Thanks
Yes and not only that, you're going to lose another ~0.65V through the transistor.jbord39 said:Would switching to maybe 9V change the frequency of both oscillators?
Maybe the transistor's base is at a lower voltage (due to voltage lost inside the 556?) then the +5V collector voltage.
I wouldn't say the transistor is operating in either the triode region or constant current mode. In this case the current is determined by the amount of current supplied by the 556 and the beta of the transistor, provided there is enough voltage available. It is also possible that the beta of the transistor is low and the 556 can't supply enough current. I don't think just connecting the collector to 9V will help unless you also connect the 556 to 9V too.jbord39 said:Could this cause the TIP120 to operate in the triode region rather than constant current? If so, would applying 9V to the collector instead of 5V increase the current? I am getting power from a 9V battery which is regulated to 5V with the LM317; so it would be easy to connect the collector to +9V instead of +5V.
One way to increase the output of a 555 timer chip is by using a transistor configuration. By adding a transistor to the output stage of the chip, you can boost the output current and voltage to drive larger loads.
The main purpose of using a transistor with a 555 timer chip is to increase the output power and voltage. This allows the chip to drive larger loads and perform more complex functions.
Yes, you can use a variety of transistors with a 555 timer chip. However, the most commonly used transistor for this purpose is the NPN type, as it is widely available and easy to use.
The transistor can be connected to the output pin (pin 3) of the 555 timer chip by connecting the collector to the output pin, the emitter to ground, and the base to the trigger pin (pin 2). A resistor may also be needed to limit the current flow.
To optimize the transistor configuration, you can adjust the value of the resistor connected to the transistor's base and the load connected to the collector. This will depend on the specific application and the desired output voltage and current.