Uploaded September 2024 | Updated September 2026, 7 hours ago

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Recent schematics: bristolwatch.com/index.htm
Video navigation, note links below.
1:41 Motor demo, why a high-side power switch?
3:12 Motor ON-OFF, note breaking, power supply turned ON-OFF.
4:25 LM317-MJ2955 CCS vs. ULN2003A vs. 2N7000 MOSFET high side switch.
5:48 Photovoltaic-based IGBT, MOSFET power solid state relays.
7:52 Where to place high and low side SSRs on an h-bridge.
9:00 Solving the 20V motor voltage limit problem.
10:27 HV IGBT H-bridge with the PV optocouplers, TC4429 gate driver.
11:12 IGBT modules and introduction.

YouTube:
youtube.com/watch?v=408qlS2z6ys
Opto-Coupler Theory and Circuits

youtu.be/Xjr7dFh3lYY
Opto-Coupler Interfacing H-Bridge Circuits

Website:
bristolwatch.com/ele/opto_isolated.htm
Opto-isolated transistor Drivers for Micro-Controllers

bristolwatch.com/ele2/index.htm
Optical Isolation of H-Bridge Motor Controls

bristolwatch.com/TC4420/index.htm
Intro TC4420-TC4429 MOSFET Drivers

bristolwatch.com/ele3/1g.htm
VOM1271 Photovoltaic MOSFET Driver Circuits

bristolwatch.com/ele3/2c.htm
Bidirectional Solid State Relay Circuits

YouTube Videos

youtu.be/5lxxiC1HtBk
Introduction TC4420-TC4429 MOSFET Drivers

youtu.be/-Pmhx_ebJKM
Circuit Examples for TC4420-TC4429 MOSFET Drivers

youtu.be/h_0t50j0BxM
TC4420 H-Bridge Circuit