: Light-sensitive switches (LASCR), liquid-level alarms, and time-delay circuits.
: Overvoltage protection and emergency lighting systems.
Marston is well-known for his "110 Projects" series, which also includes similar volumes for and the 555 Timer . Marston - 110 Thyristor Projects 1972 PDF - Scribd
: It provides 110 distinct projects ranging from basic alarm and sensor circuits to advanced power control systems.
: Lamp dimmers, motor speed controllers, and heater regulators.