## What are discrete components?

Discrete components contain a single component (or two components in the case of transistors with antiparallel diodes) in a simple package, usually designed to be soldered to a printed circuit.

## What are the different components of UJT?

A unijunction transistor (UJT) is a three-lead electronic semiconductor device with only one junction that acts exclusively as an electrically controlled switch….Unijunction transistor.

Type | active |

Invented | General Electric (1953) |

Pin configuration | B2, B1, emitter |

Electronic symbol | |
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UJT N and P symbol |

**What is a discrete electrical component?**

Discrete components are simply defined as single element (circuit) electronic devices. Discrete devices are subgrouped by passive (primarily to regulate voltage and current flows, although they cannot achieve power gain) and active (switching devices, with the exception of LED).

**What is a discrete type?**

Discrete types are types for which each value (except its minimum and maximum) has a predecessor and a successor value, for example the integer type or enumerated type. The opposite are referred to as non-discrete types, for example the type float. Created and maintained by Frans Coenen.

### What is a discrete capacitor?

Practical capacitors that are used as discrete components in electronic circuits employ conductive metal plates separated by a dielectric material, but they are not limited to a two plate configuration. These capacitors can have multiple parallel plates separated by a variety of insulating materials.

### What is intrinsic standoff ratio of UJT?

Intrinsic standoff ratio is the ratio of the standoff voltage to the power supply voltage. The standoff voltage is the voltage needed to fire e unijunction transistor’s emitter. The intrinsic standoff voltage is also defined as the ratio of the RB1 (base resistance 1) and the interbase resistance (RBB).

**What is intrinsic standoff ratio in basic electronics?**

Intrinsic standoff ratio (η) : It is the ratio of RB1 to the sum of RB1 and RB2. It can be expressed as η = RB1/(RB1+RB2) or η = RB1/RBBO. The typical range of intrinsic standoff ratio is from 0.4 to 0.8.

**What are discrete semiconductors?**

A semiconductor device that is specified to perform an elementary electronic function and is not divisible into separate components functional in themselves. NOTE 1 Diodes, transistors, rectifiers, thyristors, and multiple versions of these devices are examples.

#### What are the types of discrete variables?

Discrete variables may be further subdivided into:

- Dichotomous variables.
- Categorical variables (or nominal variables)
- Ordinal variables.

#### What is the equivalent of a UJT circuit?

The equivalent UJT circuit can be witnessed in the above shown image. We can find how relatively simple this equivalent circuit appears to be, which includes a couple of resistors (one fixed, one adjustable) and a solitary diode.

**What is the stand-off ratio of a typical UJT device?**

The standard value of the stand-off ratio for a typical UJT device is between 0.4 and 0.6. Thus considering the value of η = 0.5, and substituting it in the above equation we get: When the supply is switched ON, the voltage through the resistor RT charges the capacitor CT towards the supply level VBB.

**What is the resistance of a UJT?**

A simple way to examine the operation of the UJT is to consider it to be a voltage divider and a p–n diode. The manner in which the device is manufactured is such that the interbase resistance, that is, the resistance between base 1 and base 2, is high. This value will be in the range 5 to 10 kΩ.

## What are the characteristics of unijunction transistor (UJT)?

The Unijunction Transistor (UJT) will act as voltage breakdown device, when the input applied between emitter and base 1 reduces below breakdown value i.e., RB1 increases to a higher value. This shows that RB1 depends on the emitter current and it is variable. The characteristics of Unijunction Transistor (UJT) can be explained by three parameters: