2013年6月4日 · I would like to pulse DC with a 555 timer and a TIP31 npn transistor. I chose the 555 because it seems easy and parts are available. That particular transistor fits the 1a range I would like to pulse.

The answer is to use a buffer transistor. For 200mA, use a BC547 or equivalent. For 1A, use a TIP31 or equivalent. All the electronics info you need to know about the 555 Timer. With over 80 different electronic circuits that you can build.

2009年6月9日 · You might get lucky and come up with the right limiting resistor in the base circuit. The TIP31's each then become a current limiting resistor and will dissipate about 10 watts, requiring heat sinks. A smaller supply voltage will minimize the losses caused by either active or passive current limiting.

The TIP31A and TIP31C are popular silicon Epitaxial-Base general purpose NPN power transistor which has 3A (3000ma) maximum load current capacity to drive the load. TIP31C is a NPN epitaxial planar transistor, designed for using in general purpose amplifier and …

There are two limitations on the power handling ability of a transistor: average junction temperature and second breakdown. Safe operating area curves indicate IC − VCE limits of the transistor that must be observed for reliable operation; i.e., the transistor must not be subjected to greater dissipation than the curves indicate.

The TIP31C NPN Power Transistor silicon Epitaxial-Base mounted in Jedec TO-220 plastic package. They are intended for use in medium power linear and switching applications. The complementary PNP types are TIP32A and TIP32C respectively. You can download this datasheet for TIP31C NPN Power Transistor from the link given below:

2019年3月25日 · My vote (also) is to use the 555 to drive an external power transistor that then drives the sounder. Best way to do this is to change the connections to the sounder - connect the red lead directly to the +12 V, and have the transistor switch the black lead connection to GND.

Part #: TIP31. Download. File Size: 123Kbytes. Page: 6 Pages. Description: Complementary Silicon Plastic Power Transistors. Manufacturer: ON Semiconductor.

The CENTRAL SEMICONDUCTOR TIP31 series devices are silicon NPN epitaxial-base power transistors designed for power amplifier and high speed switching applications.

The TIP31 is a popular NPN bipolar junction transistor (BJT) commonly used for general-purpose amplification and switching applications. Here are some key specifications of the TIP31 transistor: Collector Current (Ic): The maximum collector current is typically around 3 amperes (A).