Features # Available in either SOT-23 or 2×3 DFN packaging # Precision 4 MHz internal oscillator # Baseline Core with 33 Instructions, 2 Stack Levels # All single-cycle Instructions except for program branches which are two cycles # 12-bit wide instructions # 8-bit wide data path # 25 mA source/sink current I/O # Low power [...]
This is a design for audiometer circuit. This audiometer is an instrument used for the diagnosis threshold of human hearing to give some particular audio frequency and also a certain level of intensity. Raised from the signal generator sinus and selected using a multiplexer 4051. Amplitude or intensity of sound can be arranged through the [...]
This circuit is describes about sensing air flow using microcontroller PIC16C781. In this circuit is using Programmable Switch Mode Controllers (PSMC) that combination between the Integrated Operational Amplifier, Digital-to-Analog Converter (DAC), and gated timer to construct a thermally operated air flow sensor with minimum external components. This is the figure of the circuit. Air flow [...]
Stops charging when battery is full charged, Portable unit Charging of the mobile phone, cellphone battery is a big problem while traveling as power supply source is not generally accessible. If you keep your cellphone switched on continuously, its battery will go flat within five to six hours, making the cellphone useless.A fully charged battery [...]
This circuit is intended to show a general solution for implementation a low cost ADC and a 2-way multiplexed LCD using COP840C 8-bit microcontroller. The implementation is demonstrated by means of a digital personal scale. Details and function of the weight sensor itself are not covered in this article. Also the algorithms used to calculate [...]
The simple ADC in the figure 1 is perfect for getting analog signals into a purely digital microcontroller. Using just five surface-mount parts, you can assemble it for less than 50 cents (1000), which is approximately half the cost of a single chip-ADC approach in the same volume. Moreover, this design takes only one pin [...]
This 12V inverter is very easy to build, cheap components that many electronics hobbyists may even already have. Though it is possible to build a more powerful circuit, the complexity caused by the very heavy currents to be handled on the low-voltage side leads to circuits. The circuit diagram of 12v inverter is easy to [...]
