12V battery level indicator circuit (LED bargraph)

On 2018-12-20 11:55:33  in Generally electronic component

12V battery level indicator circuit (LED bargraph)

This article briefly introduces 12V battery level indicator circuit (LED bargraph) ...

How to design a common-emitter amplifier circuit?

On 2019-09-09 10:27:12  in Generally electronic semiconductor

How to design a common-emitter amplifier circuit?

This article describes the characteristics of the common-emitter amplifier. ...

​how to detect a photosensitive transistor?

On 2018-10-27 11:13:49  in Memory

​how to detect a photosensitive transistor?

the pin of the pin identifies the pin arrangement of the photosensitive transistor as shown in Figure 6-8,the foot near the pin or the longer one is the emitter E,and the far or shorter foot of the foot is the collector C ...

What is the circuit knowledge of wind speed sensor?

On 2023-06-25 13:50:32  in Filter

What is the circuit knowledge of wind speed sensor?

This article describes the characteristics of the wind speed sensor. ...

What is the circuit knowledge of the wind speed sensor?

On 2023-08-28 15:49:37  in Sensor

What is the circuit knowledge of the wind speed sensor?

This article describes the characteristics of the wind speed sensor. ...

Different role of reed relay and solid state relay

On 2019-01-04 11:43:43  in Relays

Different role of reed relay and solid state relay

This article describes the role of reed relay and solid state relay ...

What are the methods for reducing errors in resistance detection with a pointer multimeter?

On 2019-02-14 10:47:00  in Resistors

What are the methods for reducing errors in resistance detection with a pointer multimeter?

This article describes the methods for reducing errors in resistance detection ...

How can embedded system development become simpler?

On 2021-03-19 10:38:31  in Generally electronic semiconductor

How can embedded system development become simpler?

This article describes the characteristics of the embedded system. ...

How to detect whether a signal amplifier is installed in the environment?

On 2021-05-05 11:01:48  in Generally electronic semiconductor

How to detect whether a signal amplifier is installed in the environment?

This article describes the characteristics of the amplifier. ...

Thyristor

On 2018-12-25 14:24:38  in Generally electronic semiconductor

Thyristor

This article writes about the thyristor ...

How to detect the and Photo resistor

On 2019-07-03 10:59:56  in Resistors

How to detect the and Photo resistor

​This article writes about the method of detecting varistor and Photo resistor ...

How to make a fast battery charger?

On 2019-01-21 16:38:37  in Technology

How to make a fast battery charger?

This article describes how to make a fast battery charger ...

Several chips on computer motherboard

On 2019-02-12 17:09:53  in IC Chips

Several chips on computer motherboard

This article writes about several chips on computer motherboard ...

What is a unidirectional thyristor?

On 2018-12-14 11:49:41  in Generally electronic semiconductor

What is a unidirectional thyristor?

This article briefly introduces the unidirectional thyristor ...

What is the effect of RS-485 in communication cables?

On 2023-05-16 14:17:08  in IC Chips

What is the effect of RS-485 in communication cables?

This article describes the characteristics of the cables. ...

What is the effect of RS-485 in communication cables?

On 2023-05-16 12:00:35  in IC Chips

What is the effect of RS-485 in communication cables?

This article describes the characteristics of the cables. ...

What is the development trend of the smart sensor industry?

On 2024-01-09 16:05:28  in IC Chips

What is the development trend of the smart sensor industry?

This article describes the characteristics of the sensors ...

How to choose an LCD panel by the best way?

On 2021-11-06 10:55:49  in Photoelectric

How to choose an LCD panel by  the best way?

This article describes the characteristics of the LCD panel. ...

How to detect the Field effect transistor quality and replace the bad one ?

On 2019-03-23 11:36:39  in Generally electronic semiconductor

How to detect the Field effect transistor quality and replace the bad one ?

This article writes about the detection and replacement of Field effect transistor quality ...

How to make a wireless music doorbell?

On 2019-04-20 13:27:35  in Knownlege

How to make a wireless music doorbell?

This article describes the production of wireless music doorbell ...

How to synthesize phosphor?

On 2019-01-15 11:35:30  in Knownlege

How to synthesize phosphor?

This article briefly introduces three ways to synthesize phosphors ...

What is the matching method of RS-422 and RS-485 transmission lines?

On 2021-12-30 10:59:47  in Connector

What is the matching method of RS-422 and RS-485 transmission lines?

This article describes the characteristics of the RS-422 and RS-485 transmission lines. ...

What are the principles and details of MCU control PCB board design?

On 2019-08-08 10:52:18  in Generally electronic component

What are the principles and details of MCU control PCB board design?

This article describes the characteristics of the MCU control PCB board. ...

what is a solid state relay (SSR)?

On 2018-12-25 13:11:35  in Relays

what is a solid state relay (SSR)?

This article writes about the solid state relay (SSR) ...

Voltage regulator diode

On 2018-12-18 17:06:17  in Generally electronic semiconductor

Voltage regulator diode

This article introduces the voltage regulator diode ...

How to measure motherboard standby conditions?

On 2019-06-15 15:28:54  in Technology

How to measure motherboard standby conditions?

This article describes how to measure motherboard standby conditions. ...

Electrical parameters and CMOS circuit of TTL circuit

On 2018-08-23 11:21:20  in Sensor

Electrical parameters and CMOS circuit of TTL circuit

the load capacity of the circuit, that is, the fan out coefficient, should be considered so as not to affect the normal operation of the circuit. ...

How is the EMC of the isolation transformer designed?

On 2019-09-11 10:16:25  in Generally electronic component

How is the EMC of the isolation transformer designed?

This article describes the characteristics of the transformer. ...

what is an infrared light emitting diode and how to detect it?

On 2018-12-28 16:43:35  in Generally electronic semiconductor

what is an infrared light emitting diode and how to detect it?

This article briefly introduces the infrared light emitting diode and the method to detect it. ...

What are the advantages and disadvantages of USB-C?

On 2020-09-11 10:41:31  in IC Chips

What are the advantages and disadvantages of USB-C?

This article describes the characteristics of the interface. ...

How to detect and apply thermocouple temperature sensors?

On 2019-01-02 15:38:30  in Sensor

How to detect and apply thermocouple temperature sensors?

This article describes how to detect and apply thermocouple temperature sensors ...

​how to detect the discoloration LEDs?

On 2018-10-26 16:40:18  in Memory

​how to detect the discoloration LEDs?

As shown in Figure 5-18,a circuit for detecting a discoloration light emitting diode (LEDs),a multimeter is placed in the RX10k2 block,and the two pin is connected. ...

What is gate circuit and how to judge it's good or bad?

On 2019-03-25 13:58:42  in IC Chips

What is gate circuit and how to judge it's good or bad?

This article describes the gate circuit and how to judge it's good or bad ...

What is a three-terminal integrated voltage regulator and how to classify?

On 2018-12-14 15:01:07  in Knownlege

What is a three-terminal integrated voltage regulator and how to classify?

This article describes the role of three-terminal integrated voltage regulator and how to classify ...

Analysis of the working principle of UP6103 chip.

On 2019-05-29 16:15:45  in IC Chips

Analysis of the working principle of UP6103 chip.

This article describes the analysis of the working principle of UP6103 chip. ...

One of the special resistor:thermistor

On 2019-01-07 16:33:18  in Resistors

One of the special resistor:thermistor

This article briefly introduces the thermistor ...

What are the requirements of sensors for hydropower plants?

On 2019-06-10 16:02:24  in Sensor

What are the requirements of sensors for hydropower plants?

This article briefly introduces the requirements of sensors for hydropower plants ...

What is the working principle of crystal triode amplifier circuit?

On 2019-10-10 10:13:47  in Generally electronic component

What is the working principle of crystal triode amplifier circuit?

This article describes the characteristics of the crystal triode amplifier. ...

What is the importance of RFID systems to hospitals?

On 2023-05-12 11:40:29  in IC Chips

What is the importance of RFID systems to hospitals?

This article describes the characteristics of the RFID systems. ...

What is an infrared receiver?

On 2019-01-02 16:02:03  in Generally electronic semiconductor

What is an infrared receiver?

This article describes the infrared receiver ...