#Qucs simulation stuck how to
#Qucs simulation stuck software

UPDATE: further experimentation made me realize that the antenna can't be floating, it has to be connected to ground.

#Qucs simulation stuck how to

I appreciate inputs on how to solve the problem as well as how to design a regenerative feedback for the circuit. Up left is Ve and Vc, up right input (measured at the 'antenna') and output (measured at the 2kOhm resistor), low left Vb (base voltage) and low right the input. but I have the impression that the transient solver is getting stuck with small steps. Creator: DerManu Created: Updated: DerManu - 2015-01.

spice simulation program with integrated circuit emphasis qucs. Qucs transient simulation hangs on very simple circuits. Initially, I tried to model these effects with attenuators, but comparing the results from different simulators (which have the nonideal models) I can see. Unfortunately, the only model available is the ideal one without taking into account the isolation or insertion loss values. A simulation window opens and a sliding bar reports simulation progress. Im trying to simulate a nonideal directional coupler in QUCS. The digital simulation block can be found among the other simulation blocks. The Ngspice, Xyce and SPICE OPUS simulators are not embedded in. Check out the attached simulation its a 1. To start DC simulation click on the Simulate toolbar button (or use menu: Simulation Simulate). Select the digital components in the combobox of the components tab on the left-hand side and build the circuit shown in figure 1. Spice4qucs includes built-in support for SPICE via a subsystem specifically designed for this purpose. Create Schematics -> Assign parameter values to differnet components -> Run. The process I want to carry out is mentioned below. for many number of simualtions) and generate IV curves (and its data) for each simulation.

#Qucs simulation stuck software

The diode and detection circuit is shorted or deactivated because I wanted to analyze first just the transistor output.The DC simulation shows approx the values I calculated for the biasing (1 mA quiscent current, 0,7V bias on the base and 4,5V on the collector) but when I run the AC simulation I get very strange results: This section describes a number of fundamental methods for launching circuit simulations from the Qucs GUI using the Ngspice, Xyce and SPICE OPUS compatible simulator engines. But my final objective is to use the QUCS software to simulate the same schematics for many number of times (i.e. I'm trying to design a small amplifier for AM signals to use before the usual diode-C-R detection (the reception in my area is very poor).