* Corresponding author Abs t rac t A l oca l power supp ly c i rcu i t wh ich i s d r i v e n b y t h e m a i n s w i t c h o f a P W M c o n v e r t e r i s described and analyzed. The operat ion of the c ircuit i s based on the charge pump pr inc ip le with a r e s o n a n t r e s e t o f t h e c h a r g e pump capacitor . The charge pump capacitor a l s o serves as a turn o f f snubber o f t...

Two early studies showed that visual prompts can be effectively used to encourage people to turn off the lights in unoccupied classrooms, but they were methodologically limited. The current study used an ABAB-B design with an 11-week follow-up to investigate whether two different visual prompts (large and small signs) could be employed to increase "lights off" behaviour in 17 unoccupied washroo...

This paper presents a numerical model of gate turn-off thyristors (GTO’s). The new concept of a controlledswitch realized by a controlled-current source is first introduced. Using this basic model, an equivalent circuit of the GTO is given. According to the characteristics of GTO given by manufacturers, the equations connected with all the parameters of the equivalent circuit are deduced. All o...

While considerable progress has been made in the analysis of large systems containing a single type of coupled dynamical component (e.g., coupled oscillators or coupled switches), systems containing diverse components (e.g., both oscillators and switches) have received much less attention. We analyze large, hybrid systems of interconnected Kuramoto oscillators and Hopfield switches with positiv...

Design and construction of a stable current supply with protection circuits are described. The reported circuit provides a high-stable and high-level current variable from 0.5-1.2 A with the protect ion circuits to prevent over load current, voltage and off-range temperature operation. A detailed analysis of the circuit parameters is given and the time behaviors of the load voltage/current and ...

“I wed art. It is my husband―my world―my lifedream―the air I breathe,” said Rosa Bonheur, explaining her life choices. “Art is absorbent―a tyrant. It demands heart, brain, soul, body, the entireness of its votary.” A native of Bordeaux, France, Bonheur was betrothed to art early in life, born into a family of artists. They moved to Paris when she was still a young child. Precocious and headstro...