# What are the basics of a transistor Q1?

## What are the basics of a transistor Q1?

The humble transistor Q1 Emitter (E) Collector (C) Base (B) Transistor basics •Emitter to base junction is forward biased (normally) •Collector to base junction is reverse biased (normally) •Transistors are current operated devices, so KCL should be applied first: –I E = I C + I B Basics continued •Leakage current: I CBO (Emitter open)

## How many transistor circuits are in this book?

INTRODUCTION This e-book contains 100 transistor circuits. The second part of this e-book will contain a further 100 circuits. Most of them can be made with components from your “junk box” and hopefully you can put them together in less than an hour.

What is the symbol for a Darlington pair of transistors?

Transistor circuit symbols A Darlington pairis two transistors connected together to give a very high current gain. In addition to standard (bipolar junction) transistors, there are field-effect transistorswhich are usually referred to as FETs. They have different circuit symbols and properties and they are not covered by this page.

### What are the 555 and 7555 transistors called?

The 555 and 7555 are called TIMERS or Timer Chips. They contain about 28 transistors and the only extra components you need are called TIMING COMPONENTS. This is an external resistor and capacitor. When a capacitor is connected to a voltage, it takes a period of time to charge.

### How is the IC of a saturated transistor determined?

When a transistor is saturated the collector current Ic is determined by the supply voltage and the external resistance in the collector circuit, not by the transistor’s current gain. As a result the ratio Ic/IBfor a saturated transistor is less than the current gain hFE.

What kind of transistor is the sd1411rf?

SD1411RF & MICROWAVE TRANSISTORSHF SSB APPLICATIONS.30 MHz.40 VOLTS.IMD -30 dB.COMMON EMITTER.GOLD METALLIZATION.P 200 W MIN. WITH 16 dB GAIN=OUT.400 x .425 6LFL (M153)epoxy sealedORDER CODE BRANDINGSD1411 SD1411PIN CONNECTIONDESCRIPTIONThe SD1411 is a silicon NPN transistor designedfor telecommunications in HF and VHF frequencybands.

#### What kind of transistor is the mmbr941lt1?

MOTOROLAOrder this documentSEMICONDUCTOR TECHNICAL DATAby MMBR941LT1/DThe RF LineMMBR941NPN SiliconMRF941Low Noise, High-FrequencyMRF947TransistorsMRF9411Designed for use in h SD1411RF & MICROWAVE TRANSISTORSHF SSB APPLICATIONS.30 MHz.40 VOLTS.IMD -30 dB.COMMON EMITTER.GOLD METALLIZATION.P 200 W MIN.

07/08/2020