Eugene Kaplounovski

Short-circuit protection is an obvious requirement for a power supply, especially when its load connects to a cable that's subject to damage. Many modern power-converter ICs include some means of protection, such as thermal shutdown, against the overload condition, but, in...

High efficiency and, hence, low loss is a usual design goal for a PWM circuit. Figure 1 shows one of several channels of low-loss PWM control for hydraulic valves used in heavy industrial machinery. These valves usually have dc resistance of approximately 12 Ω...

This Design Idea describes an enhancement to a previous one (Reference 1). The circuit in Figure 1 uses a normally open SPST pushbutton switch, S1, instead of the SPDT switch that the original design required. You can use a membrane switch to significantly simplify the...