.. include:: /project-links.txt
.. include:: /abbreviation.txt


##############################################
 Capacitive Half Wave Rectification Pre Zener
##############################################

.. getthecode:: capacitive-half-wave-rectification-pre-zener.py
    :language: python3
    :hidden:
    :notebook:

This example shows a capacitive power supply with a pre zener half-rectification.

.. code-block:: py3

    
    
    import matplotlib.pyplot as plt
    
    
    import PySpice.Logging.Logging as Logging
    logger = Logging.setup_logging()
    
    
    from PySpice import plot, SpiceLibrary, Circuit, Simulator
    # from PySpice import *
    from PySpice.Unit import *
    
    from PySpice.Doc.ExampleTools import find_libraries
    libraries_path = find_libraries()
    spice_library = SpiceLibrary(libraries_path)
    
    


.. image:: capacitive-half-wave-rectification-pre-zener-circuit.png
    :align: center


.. code-block:: py3

    
    circuit = Circuit('Capacitive Half-Wave Rectification (Pre Zener)')
    
    circuit.include(spice_library['1N4148'])
    # 1N5919B: 5.6 V, 3.0 W Zener Diode Voltage Regulator
    circuit.include(spice_library['d1n5919brl'])
    
    ac_line = circuit.AcLine('input', 'L', circuit.gnd, rms_voltage=230@u_V, frequency=50@u_Hz)
    circuit.C('in', 'L', 1, 330@u_nF)
    circuit.R('emi', 'L', 1, 165@u_kΩ)
    circuit.R('in', 1, 2, 2*47@u_Ω)
    # 1N4148 pinning is anode cathode ->|-
    circuit.X('D1', '1N4148', 2, 'out')
    circuit.C('2', 'out', 3, 250@u_uF)
    circuit.R('2', 3, circuit.gnd, 1@u_kΩ)
    circuit.X('D2', '1N4148', 3, 2)
    # d1n5919brl pinning is anode cathode ->|-
    circuit.X('Dz', 'd1n5919brl', circuit.gnd, 'out')
    circuit.C('', 'out', circuit.gnd, 250@u_uF)
    circuit.R('load', 'out', circuit.gnd, 1@u_kΩ)
    
    # print circuit.nodes
    
    # Simulator(circuit, ...).transient(...)
    simulator = Simulator.factory(simulator='ngspice')
    # simulator = Simulator.factory(simulator='ngspice-subprocess')
    # simulator = Simulator.factory(simulator='xyce-serial')
    simulation = simulator.simulation(circuit, temperature=25, nominal_temperature=25)
    analysis = simulation.transient(step_time=ac_line.period/200, end_time=ac_line.period*50, log_desk=True)
    
    print(type(analysis))
    print(type(analysis.simulation))
    print(type(analysis.simulation.simulator))
    import pickle
    pickeld_analysis = pickle.dumps(analysis)
    del analysis
    
    analysis = pickle.loads(pickeld_analysis)
    
    figure, ax = plt.subplots(1, figsize=(20, 10))
    
    ax.plot(analysis.L / 100)
    ax.plot(analysis.out)
    
    ax.plot(analysis['2'])
    ax.plot(analysis['3'])
    ax.plot((analysis.out - analysis['3']))
    # ax.plot((analysis['2'] - analysis['3']))
    
    #ax.plot((analysis.L - analysis['1']) / 100)
    
    ###ax.plot((analysis.out - analysis['L']) / 100)
    ###ax.plot(analysis.out - analysis['2'])
    ###ax.plot((analysis['2'] - analysis['1']) / 100)
    # or:
    #   plt.ax.plot(analysis.out.abscissa, analysis.out)
    ax.legend(('Vin [V]', 'Vout [V]', 'V2 [V]', 'V3 [V]', 'VC2 [V]'), loc=(.8,.8))
    ax.grid()
    ax.set_xlabel('t [s]')
    ax.set_ylabel('[V]')
    
    plt.tight_layout()
    plt.show()
    


.. image:: capacitive-half-wave-rectification-post-zener.png
    :align: center