POWER MOSFET INVERTER
The inverter circuit described is designed to convert low-voltage DC into high-voltage AC or DC, suitable for various applications requiring high voltage. The use of a transformer with reversed windings allows flexibility in voltage conversion, enabling the circuit to adapt to different input and output voltage requirements.
The power FETs, Q1 and Q2, are critical components in the inverter's operation, acting as switching devices that control the flow of current through the transformer. Proper thermal management is crucial for these transistors, as they can generate significant heat during operation. The inclusion of heat sinks is necessary to maintain their operational integrity and prevent thermal failure.
Capacitors C1 and C2 play a vital role in protecting the circuit from voltage spikes, which can occur due to the rapid switching of the FETs. These capacitors help to smooth out fluctuations in voltage and provide stability to the output, ensuring that the inverter operates reliably under varying load conditions.
Overall, this inverter circuit is a robust solution for applications requiring high-voltage output, combining effective voltage transformation with essential protective features to enhance performance and reliability. Proper selection of components and attention to thermal management are key factors in optimizing the circuit's functionality.This inverter can deliver high-voltage ac or dc, with a rectifier and filter, up to several hundred volts. The secondary and primary of T1-a 12. 6 to 440 V power transformer, respectively-are reversed; e. g. , the primary becomes the secondary and the secondary becomes the primary. Transistors Q1 and Q2 can be any power FET. Be sure to heat sink Q1 a nd Q2. Capacitors C1 and C2 are used as spike suppressors. 🔗 External reference
Related Circuits
It is common to require the sequential powering of devices, which can involve managing numerous switches that are often in hard-to-reach locations, particularly for informational devices and their connections. This sequential actuator autonomously activates one to four devices in...
All miniature electronic devices operate off batteries. Some of them require higher than the standard battery voltages for efficient operation. If a battery with the specific voltage is unavailable, additional cells must be connected in series to increase the...
A sidetone oscillator is a specialized audio oscillator that is activated and deactivated in conjunction with the transmitter. This oscillator is driven by RF signals and is powered by batteries. It employs a 555 integrated circuit (IC) timer configured...
The DK-5A and DK-5AD AC power control circuit is illustrated in Figure 6-77. The figure includes a closing button (SBz) and a line (YA) connected to the closing electromagnet coil (U). This circuit is designed for the operation of...
The gain control element is a Light Dependent Resistor (LDR). These are blessed with a few very useful features for our purposes, one of which is low distortion even at quite high signal levels. Being light activated, all we...
The 15V zener is fed via the 4.7k resistor from the input. With 0.6V across the base-emitter of the PNP transistor, this establishes a voltage of 14.4V across the 3.3k resistor, so there must be a current of nearly...