This capacitive voltage divider calculator helps us to find the C1 and C2 capacitor values for dividing an AC input voltage into a lower AC output voltage. We just have to enter the input AC voltage and the required output AC voltage. We also have to enter the AC frequency and the assumed AC current […]
Voltage
How to Connect Two TRIACs in Series for High Voltage Loads
Normally, for standard 220V AC household projects, a single 600V or 800V TRIAC is more than enough. But what if you are working with a very high voltage line, like 1000V AC? A single common TRIAC will immediately burn and short circuit because it cannot handle that much voltage stress. To solve this, we can […]
90V to 400V Low Voltage Cutoff Circuit for Solar Inverters
Today we are going to discuss a purely analog high voltage protection circuit which is specially designed for solar power systems working with PV voltages from around 90 volts up to 400 volts DC. The main purpose of this circuit is to disconnect the inverter whenever the solar panel voltage falls below a safe level, […]
How to Add Adjustable Current and Voltage feedback Control to SG3525 High Power Inverters
If you want to build a very heavy power inverter or when you want to make a high frequency induction heater, or when you want to make a lab grade variable SMPS, then getting precise control over both output voltage and current is a major engineering hurdle. Most standard designs using the classic SG3525 PWM […]
High Voltage, High Current Buck Converter Circuit using Isolated Gate Driver
This is a high voltage 310V to 60V buck converter, so we have that big 310V DC coming in which we usually get after rectifying 220V AC mains. So now that high DC is there and we want to push it down to something like 60V or lower for battery charging or similar work. Audio/Video […]
IC LM7912, -12V Negative Voltage Regulator Explained
In this post we are going to learn about one super old but gold IC called LM7912 or simply IC 7912. This one is not positive regulator like 7805 or 7812, but it is negative regulator which means it gives -12V output and not +12V. If you are making op-amp circuits or dual power supply […]