Chris Zhang’s Post

1 Channel 5V Relay Module It is a 1 Channel 5V relay module Without Light Coupling Relay. The relay normally open interface maximum load: AC 250V/10A, DC 30V/10A. It has a trigger current of 5mA, and module working voltage of DC 5V. Each channel of the module can be triggered by a jumper to set a high level or a low level. Fault-tolerant design, even if the control line is disconnected, the relay will not move. With status indicator: power (green), 1 channel 5V relay status indicator (red). All module size interfaces can be directly connected through the terminal block, which is convenient and practical. Features: -The 8550 transistor drive, drive ability. -A fixed bolt holes for easy installation. -It has a relay status indicator led Power LED(Green), 1 relay status indicator LED(Red) -Relay control interface by single-chip IO. -Low-level suction close, high-level release. -Easy to use, simple 3 line structure

Features   l Π type input filter l 2X voltage input l Output short circuit protection l Easy installation, single side pin out l Best case connecting mode l Design for high reliability, ling lifetime   Conditions: All specifications are tested under the room temperature 25℃, normal rated input voltage and pure negative normal load.   Input Characteristic    Voltage range 12VDC (Normal Rated Value): 9 ~ 18 VDC 24VDC (Normal Rated Value): 18 ~ 36 VDC 110VDC (Normal Rated Value): 66 ~ 154 VDC 48VDC (Normal Rated Value): 36 ~ 72 VDC 600VDC (Normal Rated Value): 400 ~ 800 VDC   Output Characteristic   l Voltage set-point accuracy ……………… ±2% l Line Regulation (Main) ……….........……… ±0.5% l Load regulation (Main) ………........…..........±0.5% l Output Current Limited ................................. 120% （Typ） l Output current …………………………………5-80A for optional l Output voltage …………………………………5-110V l Power ……………………………………………500-1000W

Why a resistor (2.2kohms) is used between pressure switch contacts. A resistor is often connected between pressure switch contacts for several reasons: 1. Noise suppression: The resistor helps to suppress electrical noise and spikes that can occur when the switch contacts open or close. This ensures a cleaner signal and prevents false triggering. 2. Switch contact protection: The resistor protects the switch contacts from arcing and burning, which can occur due to high inrush currents or voltage spikes. 3. Debouncing: The resistor, along with the switch's inherent capacitance, forms an RC circuit that helps to debounce the switch signal. This ensures a stable and reliable output. 4. Voltage division: In some cases, the resistor is used to divide the voltage applied to the switch, ensuring that the switch contacts don't see the full voltage. 5. Current limiting: The resistor limits the current flowing through the switch contacts, preventing excessive wear and tear. By connecting a resistor between pressure switch contacts, you can ensure a reliable, noise-free, and protected switch operation. However, the specific reason for using a resistor may vary depending on the application and circuit design.

Ii. Schematic diagram analysis of charger The following we through a typical charger schematic diagram to analyze its various components and functions in detail. A、AC power input The charger is connected to the mains grid through a power plug, usually 220V AC. B、Rectifier circuit After the AC enters the charger, it first passes through the rectifier circuit. The rectifier circuit usually consists of a bridge rectifier stack (D1 to D4) composed of four diodes, whose role is to convert alternating current to pulsating direct current.

A typical waveform of the distribution of transient voltages (lightning impulse) in the turns of a transformer winding The voltage distribution in the turns of a transformer is never linear for high-frequency voltage. This happens because the intrinsic series and parallel capacitances and inductances of the windings generate internal conditions that can cause resonances and voltage amplifications at internal points of the winding, as we can see in the figure in this post. We can also see in this image that some turns far from the beginning of the winding where we applied the lightning impulse (1.2/50us) appear large voltage oscillations. Therefore, since the winding insulation system must withstand these internal overvoltages, it is necessary to calculate the typical voltage distribution for each transformer design. To calculate transient voltages, it is necessary to generate capacitance and inductance matrices for all transformer windings and, through electrical circuit solving (with SPICE software or equivalent), it is possible to know the voltage at all internal points of the model (graph in the figure of this post). With these calculated voltage values, it is possible to design the winding insulation so that the transformer can withstand this level of transient overvoltage, which can be generated by atmospheric impulse, maneuvering, switching, VFTO, among other events in the electrical system.

Higher power density and system complexity increase complexity of electrical and thermal design 1.Power dissipation may cause electromigration 2.Thermal stress may cause ILD TDDB and metal fatigue https://lnkd.in/gg8YtdcG

Are you optimizing your wiring harness designs for reliability and performance? Key considerations for robust wire harness design: - Analyze environmental threats (EMI, temperature, moisture) - Strategic wire routing to minimize exposure and stress - Precise measurements accounting for bend radius - Space optimization for proper airflow and integration Overlooking these factors can lead to electrical faults, reduced lifespan, and increased maintenance costs. Prioritize these aspects in your next design for enhanced system dependability. Learn more about wiring harness best practices: https://lnkd.in/enDRZRhs #WiringHarness #ElectricalEngineering #DesignBestPractices

If you’re using a general-purpose actuator for an application, various factors might affect your choice. These include your application’s requirements for speed, accuracy, repeatability and force, as well as the complexity of the actuator’s design and the environments in which you want to use it. Pneumatic and electrical actuators both have their pros and cons, so consider carefully which type would best suit your intended application. Check out the full article by Rowse here: https://lnkd.in/es2J_Dvx

Insulation coatings on electric steel, often used in EV transformers and electric motors, ensure that the electricity travels the length of the steel sheet. A uniform and adequate coating of the insulation varnish is critical to ensure product performance – too thin coating can lead to short circuits from one layer to another and too thick coating can mean the layers are physically too large to meet the design criteria of the electrical device. The PROSIS Sensor is a highly sophisticated coating thickness sensor, using infrared absorption to precisely determine the thickness of oil and lubricants applied to metal sheet. The perfect choice when you need to guarantee uniform coating quality, save raw materials and reduce waste. Learn more. https://lnkd.in/gkg7v7sr #insulationcoating #electricalsteel #steelcoatingthickness #TFSCAD