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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
- Updated:
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Refrigerator TimerA timer for turning ON/OFF the refridgerator at peak load hours (6pm to 10 pm) using 8051
- magvitron
- Updated:
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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, alternate to 555 designs, 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.
Efficient MOSFET Bridge Rectifier for Resistive Loads, Or Input Power Auto Polarity Gating
2017-03-07
MOSFET bridge for efficient resistive load rectification, or indifference to input power polarity.
PWM allows easy control of linear regulator output voltage for μP based power supplies
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
Constant-current hysteretic buck regulator supply for high power LEDs, efficiency of 90%
MOSFET Bridge Rectifier gives high efficiency for low voltage, high current AC-DC supplies
Latest threads
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Hakko 933 soldering iron temperature buttons
- Started by Stevegan
- Replies: 6
