The switching power supply in Figure 1 produces 3.3 V dc from an input voltage of 2.5 to 20 V dc with high efficiency. The circuit operates at an input voltage as low as 1.5 V once it starts from a minimum of 2.5 V dc, allowing the switcher to ...
A common problem for power-supply designers is to create a compact, dual-polarity step-down converter. If space and cost are not concerns, the obvious solution is a pair of DC/DC converters, one for each output. But space and cost are almost always ...
High accuracy, stability, and wide operating range make platinum RTDs (resistance temperature detectors) popular temperature transducers. Signal conditioning these devices requires care to utilize their desirable characteristics. Figure 1’s ...
Even switch-mode power supplies with a fixed switching frequency do not always show a continuing pattern of pulses. In some conditions, pulses are omitted for various reasons. This is important to consider for output ripple voltage and EMI effects. ...
Several Design Ideas (DIs) have employed the subject ICs to implement programmable current sources in an innovative manner ( References 1-3 ). Figure 1 shows the idea. Figure 1. Two independent current sources, one for loads referenced to the more ...
Isolated flyback converters usually evoke thoughts-or bitter memories-of custom transformers, slipped delivery schedules, and agency-approval problems. Off-the-shelf flyback transformers carry isolation ratings of only 300 to 500 V and rarely of as ...
Professional condenser microphones require a 48-V supply to charge the internal capacitive transducer and power the internal buffer for the high-impedance transducer output. You can use a simple boost converter, a filter circuit to reduce ...
Stephen Woodward, a prolific circuit designer with way more than 100 published Design Ideas (DIs), had his “80 MHz VFC with prescaler and preaccumulator” [ 1 ] published on October 17, 2024, as a DI on the EDN website. Upon reading his ...
ESD protection for in-vehicle networks ESD protection device in a small SOT23 Surface-Mounted Device (SMD) plastic package, designed to protect two automotive in-vehicle network bus lines from the damage caused by ElectroStatic Discharge (ESD) and ...
ESD protection for in-vehicle networks ESD protection device in a small SOT23 Surface-Mounted Device (SMD) plastic package, designed to protect two automotive in-vehicle network bus lines from the damage caused by ElectroStatic Discharge (ESD) and ...