This design idea presents a practical circuit that implements synchronous detection to amplify small DC voltages with high linearity and excellent noise immunity. Such circuits are required in measurements involving current shunts, load cells, thermocouples, etc...
Precision synchronous detection amplifier facilitates low voltage measurements
Controller IC and one-shot form resonant controller
Resonant power supplies are popular because of high efficiency, low noise, and compactness. You can implement a resonant buck or boost converter using a single switch. The regulation of the output in such a converter derives from using a constant on or off time and a variable frequency...
Leakage-energy recuperating winding self-supplies a DC/DC converter
One of the effective passive means you can use to suppress the ringing and clamp the overvoltages caused by the leakage energy in a flyback transformer is to implement a recuperating winding bifilar with the primary winding...
CMOS-NAND gates control sump pump
With just a few NAND gates, you can control sump pumps and other pumps that keep your basement from flooding and maintain water levels in tanks...
STMicroelectronics reveals automotive high-side switch controller with flexible diagnostics and protection
The STMicroelectronics VNF1048F automotive high-side switch controller combines enhanced system-protection and diagnostic features with ST’s I2t silicon-fuse technology...
Flea power circuit detects short circuits
Sometimes, the need arises for a short-circuit tester that supplies a low current to the device under test and also uses voltages lower than 100 mV to prevent conduction of semiconductors...
New VFC uses flip-flops as high speed, precision analog switches
Voltage to frequency converters (VFCs) are a popular method of noise-tolerant analog to digital conversion. Synchronous VFCs in which an external, usually crystal-derived, clock provides timing for the conversion process...
Some Basic Math Creates A Low-Cost Nonlinear Thermocouple Interface
Measurement and process control loops often use 8-bit microcontrollers. The devices are inexpensive and widely available, and they can be programmed in many popular high-level languages – like C and Basic. However, if the loop requires a nonlinear sensor, the designer faces the added challenge of having to develop a software linearization algorithm...
Continuity buzzer is frugal with power
The buzzer indicator allows you to devote full attention to making the connection without having to observe an LED. The circuit also consumes less power ...
AC/DC power-supply startup considerations for PMDC motor loads
Permanent magnet DC (PMDC) motors offer smaller solution size and increased efficiency in applications such as portable vacuums and cordless electric power tools. When designing an isolated power supply for PMDC motors, there are several considerations to keep in mind...
