sv-design--teaser
r11000bjt1led1Voltagebatterycore1area=50.0e-6length=50.0e-3MMFwind120MMFwind220v_basev_ledv_base_drivev_battery

This simple "Joule Thief" self-oscillating LED circuit will produce light even when the battery voltage drops to 0.4 V.

Mike Donnelly
r11000bjt1led1Voltagebatterycore1area=50.0e-6length=50.0e-3MMFwind120MMFwind220v_basev_ledv_base_drivev_battery
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sv-design--teaser
VD333n2k150kVD3.0n2k10k25.0E-1260k50k5010k10k110uXAL6060_223_122.0e-6V+V-V+V-led1led2led322ubattery1Ai_inputVv_inputsw3TransmissionLinecascade RLCtline3vcc_halfvcc_halfv_dutyv_diffampv_setpointv_rampd_gate_drvv_gatev_sw_diodev_sensevccvccvccv_line_in_1v_batteryv_local_gndv_local_gndv_local_gndv_local_gndv_local_gndv_local_gndv_local_gndv_local_gndv_local_gndv_local_gndv_line_in_2v_out1_2v_out3

This is a companion example to the design: "TDFS Impedance Stability of Transmission Line Fed LED Driver - Switching".

Mike Donnelly
VD333n2k150kVD3.0n2k10k25.0E-1260k50k5010k10k110uXAL6060_223_122.0e-6V+V-V+V-led1led2led322ubattery1Ai_inputVv_inputsw3TransmissionLinecascade RLCtline3vcc_halfvcc_halfv_dutyv_diffampv_setpointv_rampd_gate_drvv_gatev_sw_diodev_sensevccvccvccv_line_in_1v_batteryv_local_gndv_local_gndv_local_gndv_local_gndv_local_gndv_local_gndv_local_gndv_local_gndv_local_gndv_local_gndv_line_in_2v_out1_2v_out3
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sv-design--teaser
VD333n2k150kVD3.0n2k10k25.0E-1260k50k5010k10k110uXAL6060_223_122.0e-6V+V-V+V-led1led2led322uTransmissionLinecascade RLCbattery1VTDFSImpedance & StabilityTm = Zs/ZIZs = V/IsZI = V/IIToward SourceToward Loadvcc_halfvcc_halfv_dutyv_diffampv_setpointv_rampd_gate_drvv_gatev_sw_diodev_outv_sensevccvccvccv_line_in_1v_batteryv_local_gndv_local_gndv_local_gndv_local_gndv_local_gndv_local_gndv_local_gndv_local_gndv_local_gndv_local_gndv_line_in_2

This example demonstrates the use of the TDFS method (Time Domain Frequency Sweep) to measure impedance stability ratio.

Mike Donnelly
VD333n2k150kVD3.0n2k10k25.0E-1260k50k5010k10k110uXAL6060_223_122.0e-6V+V-V+V-led1led2led322uTransmissionLinecascade RLCbattery1VTDFSImpedance & StabilityTm = Zs/ZIZs = V/IsZI = V/IIToward SourceToward Loadvcc_halfvcc_halfv_dutyv_diffampv_setpointv_rampd_gate_drvv_gatev_sw_diodev_outv_sensevccvccvccv_line_in_1v_batteryv_local_gndv_local_gndv_local_gndv_local_gndv_local_gndv_local_gndv_local_gndv_local_gndv_local_gndv_local_gndv_line_in_2
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sv-design--teaser
555GNDOUTRESETDISVccTHRCTRLTRIG12345678Timerc1100nc2100nled1led2q1zd1r55kv_battv_outv_trig_thrr468led3v_trig_thru2r11kbattery1dimmingpot1d2d1v_batt

This LED Dimmer Circuit uses a 555 Timer to control the PWM duty cycle of the current drive.

Mike Donnelly
555GNDOUTRESETDISVccTHRCTRLTRIG12345678Timerc1100nc2100nled1led2q1zd1r55kv_battv_outv_trig_thrr468led3v_trig_thru2r11kbattery1dimmingpot1d2d1v_batt
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sv-design--teaser
VDVDV+V-V+V-TransmissionLinecascade RLCVTDFSImpedance & StabilityTm = Zs/ZIZs = V/IsZI = V/IIToward SourceToward Loadvcc_halfvcc_halfv_dutyv_diffampv_setpointv_rampd_gate_drvv_gatev_sw_diodev_outv_sensevccvccvccv_line_in_1v_batteryv_local_gndv_local_gndv_local_gndv_local_gndv_local_gndv_local_gndv_local_gndv_local_gndv_local_gndv_local_gndv_line_in_2

This example demonstrates the use of the TDFS method (Time Domain Frequency Sweep) to measure impedance stability ratio.

077zz
VDVDV+V-V+V-TransmissionLinecascade RLCVTDFSImpedance & StabilityTm = Zs/ZIZs = V/IsZI = V/IIToward SourceToward Loadvcc_halfvcc_halfv_dutyv_diffampv_setpointv_rampd_gate_drvv_gatev_sw_diodev_outv_sensevccvccvccv_line_in_1v_batteryv_local_gndv_local_gndv_local_gndv_local_gndv_local_gndv_local_gndv_local_gndv_local_gndv_local_gndv_local_gndv_line_in_2
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sv-design--teaser
Temp555GNDOUTRESETDISVccTHRCTRLTRIG12345678TimerNTCS0603E3V+V-Therm. Resp.OUTINAdjustableLinear Reg.p_inp_outp_adjp_gndheat_outv_reg_outv_fbtemp_outsidev_gatev_555_out_ncv_battv_555_ctrl_ncv_ramptemp_enclosurev_temp_sensev_tempsense_refv_opamp_out

This LED lighting example demonstrates the value of simulating both the electrical and thermal* aspects of power dissipating circuits together, simultaneously.

bedrosian1134
Temp555GNDOUTRESETDISVccTHRCTRLTRIG12345678TimerNTCS0603E3V+V-Therm. Resp.OUTINAdjustableLinear Reg.p_inp_outp_adjp_gndheat_outv_reg_outv_fbtemp_outsidev_gatev_555_out_ncv_battv_555_ctrl_ncv_ramptemp_enclosurev_temp_sensev_tempsense_refv_opamp_out
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