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.
By varying the pulse width, the ac voltage of the transformer is var-. ied and the output voltage is maintained. A simple battery voltage monitor cir-. cuit is used to monitor low battery con-. ditions. The low voltage protection circuit. shuts down the LM3524D in the event.