PIC frequency counter with prescaller

The DP8464B from National Semiconductor is designed primarily for use in disk systems as a pulse detector. However, it can also function effectively as a general-purpose peak detector for analog signals up to 5 MHz. This integrated circuit can...

This Circuit uses a CD40110BE, Up/Down Counter IC's. This IC is able to Source Each Segment with 25 mA, Giving a Very Nice Bright Display. The 7 Segment Displays MUST be a Common Cathode Type, as I have used...

The circuit employs CA3160 and CA3140 BiMOS operational amplifiers to achieve a full-scale meter deflection of ±3 pA. The CA3140 functions as a 1T0 gain stage, supplying the necessary positive and negative output swing for the meter and the...

The functional generator is a device that any well-equipped electronic lab should possess, even if it is not frequently used. However, its convenience is greatly appreciated when needed. This scheme was published in the magazine Everyday Practical Electronics, 2000,...

This linear voltage-to-frequency converter achieves good linearity over the range of 0 to -10 V. Its mirror image provides the same linearity over the range of 0 to +10 V; however, it is not compatible with DTL or TTL. The...

Superheterodyne receivers have been mass-produced since around 1924, but for reasons of cost did not become successful until the 1930s. Before World War II, other, simpler receiver technologies such as the TRF receiver and the regenerative receiver were still...