n  title="" class="an ">&ensp;</span>subthreshold <span  title="" class="an ">&ensp;</span>operating <span  title="" class="an ">&ensp;</span><span  title="Function" class="an Function">A</span><span  title="Function" class="an Function">&ensp;</span><span  title="Function" class="an Function">type</span><span  title="" class="an ">&ensp;</span>K <span  title="" class="an ">&ensp;</span>current <span  title="" class="an ">&ensp;</span>regulates <span  title="" class="an ">&ensp;</span>electrical <span  titl