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WCN3-0040HO-A11 PDF – Seven-segment Numeric Display

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Part Number: WCN3-0040HO-A11

Function: Seven-segment Numeric LED Display

Manufacturer: World Components Network

Images:WCN3-0040HO-A11 pdf pinout

Description

The WCN3-0040HO-A11 series are 0.40 inch (10.16mm), height single, dul, triad and quad digit displays.

SH. Red displays have black face or gray face and milky segment or red segment.
Orange displays have black face or gray face and milky segment or red segment.
Yellow Green displays have black face or gray face and milky segment or green segment.

A seven-segment display is an electronic display device used to display decimal numerals, most often as an alternative to the more complex dot-matrix displays. It is composed of seven segments (LEDs or LCDs), each of which can be lit or turned off independently to represent the decimal digits 0 to 9. The seven segments are arranged in the shape of the number 8, and are often referred to as “segments.” Seven-segment displays are widely used in digital clocks, electronic meters, and calculators, among other devices.

WCN3-0040HO-A11 datasheet

Features

1. High intensity and reliability.

2. High quality and low cost.

3. Choice of colors: Red/Orange/Green/Blue,etc

4. Low power requirement.

5. Ic compatible.

6. Easy assembly.

 

WCN3-0040HO-A11 PDF Datasheet

UC2843A PDF Datasheet – Current Mode Controller

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A current mode controller is a type of control circuit used in various electronic devices and power supply systems to regulate the output current delivered to a load. It is often employed in switch-mode power supplies (SMPS), voltage regulators, LED drivers, and other applications where precise current control is required.

Part Number: UC2843A

Function: High Performance Current Mode Controller

Package: DIP, SO 8 Pin Type

Manufacturer: ON Semiconductor

Images:UC2843A pdf pinout

Description

The UC2843A family of control ICs provides the necessary features to implement off-line or DC to
DC fixed frequency current mode control schemes with a minimal external parts count.

Internally implemented circuits include a trimmed oscillator for precise DUTY CYCLE CONTROL under voltage lockout featuring start-up current less than 0.5mA, a precision reference trimmed for accuracy at the error amp input, logic to insure latched operation, a PWM comparator which also provides current limit control, and a totem pole output stage designed to source or sink high peak current. The output stage, suitable for driving N-Channel MOSFETs, is low in the off-state. […]

Block Diagram
UC2843A datasheet

Features

1. TRIMMED OSCILLATOR DISCHARGE CURRENT

2. CURRENT MODE OPERATION TO 500kHz AUTOMATIC FEED FORWARD COMPENSATION

3. LATCHING PWM FOR CYCLE-BY-CYCLE CURRENT LIMITING

4. INTERNALLY TRIMMED REFERENCE WITH UNDERVOLTAGE LOCKOUT

5. HIGH CURRENT TOTEM POLE OUTPUT UNDERVOLTAGE LOCKOUT WITH HYSTERESIS

6. LOW START-UP CURRENT (< 0.5mA) DOUBLE PULSE SUPPRESSION

UC2843A PDF Datasheet