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12 Volt Battery
Charge Monitor - Here is a battery monitor circuit which
disconnects the load when the battery is discharged,
preventing a deep discharge which could cause permanent
battery damage. The battery is automatically reconnected
when a battery charger or other DC source is connected
across the load. Select a relay which requires less than
100ma coil current and with contacts capable of handling the
load and charging..
12 Volt Lead Acid Battery Monitor - This simple circuit
makes it possible to monitor charging process to a higher
level.
300 MHz Prescaler & 30 MHz preamp for Little More Serious
Frequency Meter - A preamp that drives the CMOS counter
input and a divide by 10 prescaler to extend the range…
9v Battery Voltage Monitor - This circuit turns on a LED
whenever the voltage of a standard 9v battery connected to
the circuit drops below 7.2 volts. It uses a LTC1440
comparator, which also contains a 1.18v reference diode. In
standby mode, the circuit draws only 4uA.
A Battery Powered Lap Top Computer Power Supply - DN18
Design Notes (Linear Technology)
A Little More Serious Frequency Meter/CounterATtiny2313,
AT90S2313 - Maximum input frequency is specified to be
30 MHz in the multi-chip configuration, and in single-chip
configuration, there are both 5 MHz and 10 Mhz versions
operating with 10 and 20 MHz crystals, respectively. All
versions have 9 1/2 digit resolution.
A Pretty Good LC Meter Based on an AVR ATtiny2313, AT90S2313
AB-32/ Battery Charger Applications - Fairchild
Application Notes
AB-33/ Battery Charger Applications - Fairchild
Application Notes
AB-34/ Battery Charger Applications - Fairchild
Application Notes
AN-4138/ Design Considerations for Battery Charger Using
Green Mode Fairchild Power Switch FPStm - Fairchild
Application Notes
Analog Circuit is Accurate Battery Fuel Gauge -
Unpublished 10/98 Circuit acts as a fuel monitor for a
rechargeable battery, typically NiCd or NiMH chemistries.
Analog type needle output meter appears like an automobile
gas gauge.
Automatic Power Off Circuit Saves Battery - EDN-Design
Ideas
Battery Automatic Power Off has Simpler Design - EDN-Design
Ideas. In low-noise analog circuits, a high-gain amplifier
serves at input to increase SNR. The input signal level
determines input-stage gain; low-level signals require
highest gain. It is also standard practice in low-noise
analog-signal processing to make circuit's bandwidth as
narrow as possible to pass only useful input-signal
spectrum.
Battery Charger Applications/ AB-32 - Fairchild
Application Notes
Battery Charger Applications/ AB-33 - Fairchild
Application Notes
Battery Charger Applications/ AB-34 - Fairchild
Application Notes |
