Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Step-up converter for electromagnetic vibrational energy scavenger   This paper introduces a voltage multiplier (VM) circuit which can step up a
minimum voltage of 150 mV (peak). The operation and characteristics of this
converter circuit are described. The voltage multiplier circuit is also tested
with micro and macro scale electromagnetic vibrational generators and the
effect of the VM on the optimum load conditions of the electromagnetic
generator is presented. The measured results show that 85% efficiency can be
achieved from this VM circuit at a power level of 18 ?W.

31
The categories of this paper are: ao-sci
27
The categories of this paper are: comp-gas
7
The categories of this paper are: hep-th
22
The categories of this paper are: chao-dyn
0
The categories of this paper are: hep-ph
32
The categories of this paper are: atom-ph
16
The categories of this paper are: stat
30
The categories of this paper are: q-alg
14
The categories of this paper are: math-ph
28
The categories of this paper are: alg-geom
3
The categories of this paper are: physics
36
The categories of this paper are: cmp-lg
12
The categories of this paper are: nucl-th
23
The categories of this paper are: solv-int
24
The categories of this paper are: dg-ga
29
The categories of this paper are: funct-an