Fielect DC 6V 4N Push Pull Type Solenoid Electromagnet, Frame Type Solenoid Electromagnet Linear Motion, JF-0520B: Amazon.com: Tools & Home Improvement
Push-pull Auto-Cathode-Bias and Error-Correcting MOSFET Output Stages
Mosfet MOS Optocoupler Isolation Driver Drive Control PWM Board Module Field Effect Transistor Trigger Switch Controller 3V 20V: Amazon.com: Industrial & Scientific
Nelson Pass's US Patent, 5,343,166
Nelson Pass's US Patent, 5,343,166
The basics of signal amplification - lcamtuf's thing
Push Pull Amplifier Circuit, Operation, Advantages and Disadvantages – Analyse A Meter