(Please find the LTspice simulation .asc file in the doccuments section.)
A switched-inductor type boost converter has multiple inductors that are charged in parallel but discharged in series, thereby putting multiple boost inductors in series to the input power supply. The two diodes above and below the inductors enable parallel charging of the inductors when the MOSFET is on and the two diodes i...
Demonstrating the effect of dv/dt turn-on in a Thyristor.
For a Thyristor or SCR in the non-conducting state -
even with the gate tied to the cathode - as the rate
of change of voltage (dv/dt) across the anode and
cathode terminals exceeds the datasheet specified
maximum value (in this case 30V/us), the device will
A similar effect occurs in Diacs and Triacs.
This simulation use...
Simulations of simple shunt voltage regulator circuits to regulate the rectified output of a permanent magnet alternator such as may be found on many motorcycles.
Several variations of the basic circuit are possible.
*Please note, however, that not all variants are illustrated in this project*:
1. Using a bipolar power transistor as the shunt regulator element. Suitable for low power alte...
These are transformerless power supplies that can feed 5V circuits with current consumption ranges from 20-30 mA to 80-100 mA. Check the C or R values and the configurations.
You can simulate to measure supplied voltage and current. The model for Zener diode is on schematics for it.
Change values and get your needed output current.
The bridged capacitive version worked fine for a 50mA circuit...
<p>In answering this topic:</p>
<p>it has been found that there are problems with the internal voltage sources that EasyEDA auto-assigns to simulations when netflags such as VCC, +5V are assigned to nets.</p>
<li>This causes this simula...
Simulation of a complete Korg Nutube 6P1 Double Triode device using a model developed for EasyEDA by signality.co.uk from the single Nutube12 model of the single triode, supplied by Korg.
The demonstration circuits are based on information in:
A Two-Switch Boost-Buck Converter is a DC-DC converter whose output voltage can be greater than, equal to or lesser than the input voltage supply. This is different from a SEPIC type Boost-Buck converter in that it has two switches, two diodes, one inductor and no coupling capacitor. The control circuit is, however, more complex as it requires two comparators and two ramp signals to generate two P...
Examples of the various functions available in EasyEDA.
Some of the functions are built-in functions of ngspice. Some are EasyEDA implementations of new functions or are functions that that improve on the ngspice versions in some way, such as improving convergence, are more reliable in simulation, are more widely applicable in expressions and B sources or are just easier to use.
Note that, unles...
The equation for the switching frequency for the L4978 given on page 3 of the AN1061 Applications note:
DESIGNING WITH L4978,
2A HIGH EFFICIENCY DC-DC CONVERTERY
The notes in this analysis derive an exact equation and a close approximation that should be accurate eno...
A collection of analogue effects processing circuits.
These are simulations and not complete designs but will take relatively little work to turn into finished designs that can be transferred to PCB.
More work is required on things like the input buffering, pre-amplification and gain or tone controls, output buffering and mixer stages and power supply (the simulations are all based on a split +...
A schematic-only project to demonstrate how a bootstrap capacitor works. The overall circuit is a DC to DC Buck converter (see [Buck converter, from Wikipedia](https://en.wikipedia.org/wiki/Buck_converter)):
- The control signal is a 20kHz, 50% PWM wave.
- The power source is 12V DC.
- The MOSFET is a N-Channel, requiring a positive voltage between gate and source of at least 5V.
To simulate it,...