Electrical and electronics engineering
Electrical engineering Paid promotion @Engineeringupdatess @electricalandelectronics09
Show moreπ Analytical overview of Telegram channel Electrical and electronics engineering
Channel Electrical and electronics engineering (@electricalandelectronics09) in the English language segment is an active participant. Currently, the community unites 20 006 subscribers, ranking 6 751 in the Technologies & Applications category and 22 175 in the India region.
π Audience metrics and dynamics
Since its creation on Π½Π΅Π²ΡΠ΄ΠΎΠΌΠΎ, the project has demonstrated rapid growth, gathering an audience of 20 006 subscribers.
According to the latest data from 10 June, 2026, the channel demonstrates stable activity. Although there has been a change in the number of participants by 265 over the last 30 days and by 9 over the last 24 hours, overall reach remains high.
- Verification status: Not verified
- Engagement rate (ER): The average audience engagement rate is 25.60%. Within the first 24 hours after publication, content typically collects 5.60% reactions from the total number of subscribers.
- Post reach: On average, each post receives 5 120 views. Within the first day, a publication typically gains 1 121 views.
- Reactions and interaction: The audience actively supports content: the average number of reactions per post is 13.
- Thematic interests: Content is focused on key topics such as current, transistor, circuit, mosfet, collector.
π Description and content policy
The author describes the resource as a platform for expressing subjective opinions:
βElectrical engineering
Paid promotion @Engineeringupdatess
@electricalandelectronics09β
Thanks to the high frequency of updates (latest data received on 11 June, 2026), the channel maintains relevance and a high level of publication reach. Analytics show that the audience actively interacts with content, making it an important point of influence in the Technologies & Applications category.
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| 8 | Controlling DC motor speed using voltage directly is inefficient, so this circuit uses Pulse Width Modulation (PWM) to do it more effectively. A 555 timer generates a square wave where the ON time and OFF time can be adjusted using the variable resistor (VR1). When the pulse is narrow, the motor receives power for a shorter time, resulting in lower average voltage and slower speed. When the pulse is wide, the motor gets power for longer duration, increasing the average voltage and making it spin faster. The diodes around the potentiometer help control the charge and discharge paths separately, allowing smooth duty cycle adjustment. The output from the 555 timer drives a power transistor (2N3055), which acts like a switch to supply current to the motor. A diode across the motor protects the circuit from voltage spikes generated when the motor turns off. This method provides efficient speed control with minimal power loss.
#ElectronicsEducation #ElectronicsRD #PWM #DCMotor #555Timer
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| 10 | This circuit shows how an Arduino controls an RGB LED using three output pins. An RGB LED contains three internal LEDsβRed, Green, and Blueβcombined in one package. In this diagram, it is a common cathode type, meaning all the negative terminals are connected together and tied to ground.
Each color pin (R, G, B) is connected to a separate Arduino digital/PWM pin through a 220Ξ© resistor (R1, R2, R3). These resistors limit current and protect both the LED and the Arduino.
When the Arduino sends a HIGH signal to any pin, current flows through the resistor and the corresponding LED color turns ON. By using PWM (pins marked with ~), the brightness of each color can be adjusted. By mixing different brightness levels of Red, Green, and Blue, a wide range of colors can be produced.
For example:
Red + Green = Yellow
Red + Blue = Magenta
Green + Blue = Cyan
All three = White
This is the basic principle behind color mixing in displays and lighting systems.
#ElectronicsEducation #ElectronicsRD #Arduino #EmbeddedSystems | 0 |
| 11 | A DC power supply converts AC (alternating current) into stable DC (direct current) that electronic circuits can use. This process happens in three main stages: rectification, filtering, and regulation.
First, the AC input (for example, 120V, 60 Hz) enters the rectifier circuit. Here, a bridge rectifier made of four diodes (D1βD4) converts the sinusoidal AC waveform into pulsating DC. Instead of going positive and negative, the output now stays on one side of the axis, but it still has ripples.
Next, the smoothing circuit reduces these ripples.
Finally,
the regulator circuit provides a stable and fixed DC output. An IC like the LM78xx series maintains a constant voltage even if the input fluctuates or the load changes. Capacitors C3 and C4 improve stability and reduce noise at the input and output of the regulator.
The final output (Vout) is clean, steady DC voltage suitable for powering electronic devices, with the negative terminal connected to ground.
#Electronics #PowerSupply #Rectifier #VoltageRegulator | 0 |
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