Modern SIM cards allow applications to be loaded when the SIM is in use by the subscriber. These applications communicate with the handset or a server using SIM application toolkit, which was initially specified by 3GPP in TS 11.14 (there is an identical ETSI specification with different numbering).
(Redirected from Voltage follower) A buffer amplifier (sometimes simply called a buffer) is one that provides electrical impedance transformation from one circuit to another. Two main types of buffer exist: the voltage buffer and the current buffer.
Secondly, if the voltage level is enough to turn on the receiving device, the V IH level maynot be high enough, for example, to completely turn off the PMOS device in the input buffer.Several methods can be used to effectively accomplish voltage level translation.