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Charger performs recommended charging function for rechargeable NiZn batteries
Lead-acid battery charger using LM317 provides auto CC charge, CV top-off, and final trickle-charge
Circuit outputs the min. or max. value of several analog inputs, or provides accurate bi-level clamp
Electronic Power Rheostat
2018-07-23
Circuit generates an equivalent high power resistance that can be adjusted with a potentiometer.
555 VCO (Voltage Controlled Oscillator) uses constant current control to give wide control range.
Single Op amp provides linear, single-ended output for bridge sensor resistance change.
PB latch circuit provides on/off delay function to prevent accidental power switching
Circuit combines PWM controlled constant-current source with 3rd-order filter using one opamp
Low Power PWM Stepper Motor Driver
2018-08-05
Stepper motor driver applies full voltage for fast stepping, then PWM for low power hold
A simple circuit using the common CD4049 to generate the Radio PB Function
Notch Filter Allows Single Pot Adjustment of Notch Frequency With Little Change In Its High Q Value
2018-06-01
Notch filter Q is largely independent of component tolerances and notch frequency adjustment.
Power Saving DC Solenoid Driver Provides Initial Full Power Actuation Followed By PWM Hold
2018-03-31
Circuit applies full actuation power to solenoid with PWM hold reducing power to 12-25% of nominal
Binary ↔ BCD Conversion Using Counters
2018-02-23
Combination of Binary & BCD counters do Binary↔BCD conversions.
PB alternate action circuit uses CD4013 FF with simple debounce to control relay (or other load).
Capacitor resonant charging can nearly double the charge efficiency and quadruple energy stored.
Watchdog timer circuits, will timeout on either high or low hang
CD4106 PWM circuit uses only 2 diodes, 1 capacitor, and 1 potentiometer
Circuit generates Av=+1 with simple offset calculation using std. resistor values
PWM circuit has voltage control of 0% to 100% duty-cycle
Solid-state discrete AC/DC relay uses MOSFETs for low on-voltage with opto-isolated control input
Latest threads
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Pumphouse Project - Logic to water pump control and IoT
- Started by jclaudii
- Replies: 0
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