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Top resources
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Accurate, Adjustable SCR Crowbar Circuit For Overvoltage Protection Using TL431 ReferenceTL431 provides accurate, adjustable voltage crowbar function for circuit overvoltage protection
- crutschow
- Updated:
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NiZn Battery Charger With Auto Cutoff Using LM317Charger performs recommended charging function for rechargeable NiZn batteries
- crutschow
- Updated:
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Getting Started with Android Programming: Creating Your First AppA tutorial to help you write a simple Hello World! Android application
- DerStrom8
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Simple & Inexpensive Ideal-Diode MOSFET CircuitGood for low-drop diode applications, such as blocking battery back-charging or brownout protection
- crutschow
- Updated:
Latest reviews
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Battery - Accurate, Low-Voltage Cutoff To Prevent Complete Battery DischargeBattery Protection?
- Jason Vapes
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NiZn Battery Charger With Auto Cutoff Using LM317They could definitely become more usable in the future
- Jason Vapes
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Accurate, Adjustable SCR Crowbar Circuit For Overvoltage Protection Using TL431 ReferenceVery Interesting.
- Jason Vapes
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.
Circuit disconnects battery from operating accessories at a specific voltage to avoid dead battery.
Low Cost Alternative USB-to-GPIB Controller
2018-05-12
USB-to-GPIB Controller
Achieving Low Power on Adafruit Trinket
2018-05-12
Low Power on Trinket MCU
Simple, efficient, lead-acid battery charger auto switches from CC to CV mode
555 One-Shot Timer Has Zero Quiescent Power
2018-04-17
One-shot timer uses no power when quiescent, useful for battery powered circuits
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
Minimal circuit for auto CC/CV charging. Option allows pot adjustment of charge current.
Two simple high-side sense current limit circuits adjust to zero current and have low voltage drop
Binary ↔ BCD Conversion Using Counters
2018-02-23
Combination of Binary & BCD counters do Binary↔BCD conversions.
Simple 15V, 1.5A, CC/CV Bench Power Supply Circuit - (With Optional Laptop Charger Source)
2018-02-05
Inexpensive, single regulator IC power supply with I and V adj. to zero, includes I & T monitors
Good for low-drop diode applications, such as blocking battery back-charging or brownout protection
PB alternate action circuit uses CD4013 FF with simple debounce to control relay (or other load).
Lead-acid battery charger starts with constant-current and ends with constant-voltage trickle charge
Capacitor resonant charging can nearly double the charge efficiency and quadruple energy stored.
Circuit outputs the min. or max. value of several analog inputs, or provides accurate bi-level clamp
Watchdog timer circuits, will timeout on either high or low hang
Momentary latching relay
2011-12-29
Just for fun I designed and built this simple circuit which drives a monostable relay by a singol m
Triple Output Tracking Power Supply Uses Standard 3-Terminal Regulators, Adjusts to Zero Out
2017-03-09
Single +output plus dual +/- tracking output supply using common 3-terminal regulators goes to 0V.
Latest threads
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Switching HV Negative Ion Generator Output
- Started by pnielsen
- Replies: 0
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Troubleshooting / repairing basic panel heater
- Started by InspectorGadget
- Replies: 1
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Stepped output voltage values with switches for a music project
- Started by HurdyGuigui
- Replies: 6
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