Stepper circuit | Next Electronics

This 555 timer based PWM controller features almost 0..100% pulse width regulation using R1, while keeping the oscillator frequency relatively stable. The frequency is dependent on values of R1 and C1, values shown will give a frequency range from about...

microcontroller Generate a reset signal from a falling edge trigger

The microcontroller design features the microcontroller (MCU) in hibernation mode, which can only be awakened by a pulse (high-low-high) signal on the reset pin (active low). An accelerometer or an external real-time clock (RTC) serves as the wake-up source. The...

Precision Oscillator With 20ns Switching

A precision oscillator can be constructed using a quartz crystal; however, with appropriate component selection, it is also possible to build one using an RC (resistor and capacitor) circuit. An RC oscillator generates an oscillating signal through the use of resistors...

H-bridge driver circuit composed by the Smart SIPMOS

The BTS412B functions as two high-side power MOSFET switches, while two BU271L (50V, Zhang 1n) serve as low-side switches, forming a bi-directional H-bridge DC motor drive circuit. This configuration is designed for electrical automatic door systems, capable of handling continuous...

H-Bridge

To drive a DC motor, it is necessary to reverse the voltage across it to control the direction of rotation. This is achieved using an H-bridge, which consists of two branches connected to the motor's terminals. Each branch is made...

Augmenting a Microcontroller Circuit

To create a versatile and generic microcontroller board, the information provided thus far is sufficient. It covers the essential components needed to achieve this. The design of a microcontroller board requires careful consideration of various factors to ensure versatility and functionality....

Stepper Motor Circuits

To control a stepper motor, each winding must be energized individually in a specific and timed sequence. This energization is carried out by a driver circuit, which acts as an amplifier. The timing is managed by an indexer circuit, while...

pwm Why is the MOSFET driver in this circuit dying

The circuit receives an input voltage (Vin), which is processed through a Switch Mode Power Supply (SMPS) utilizing two MOSFETs driven by an IR2104 driver. The output is directed to the battery positive terminal (Bat+). An LM321 operates as a...

Deeply embedded design

The following is an account of such an undertaking. Recently, a design review was conducted for a cost reduction project where an older design was updated. The new design merged two different designs, incorporating some updated components alongside existing controls....