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Latch Circuits
#-C D-O
P-Z
Last Updated on:
Monday, October 03, 2011 06:07 PM |
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Links to electronic circuits, electronic schematics, designs for engineers,
hobbyists, students & inventors:
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Bipolars provide safe latch-off against opto failures - 12/07/00 EDN-Design
Ideas.....A typical SMPS (switch-mode power supply]uses a reference voltage and an
optocoupler to regulate the output voltage. The optocoupler carries the isolated
information from the secondary side to the primary nonisolated side and ensures proper
output regulation. Current-mode.....PDF contains multiple circuits, scroll to find
this circuit…. [Design Idea by Christophe Basso, ON Semiconductor, Toulouse Cedex,
France] |
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Circuit Adds Latch-Off Current Limit to Regulator - 03/30/00 EDN-Design
Ideas.....In many applications, forcing a high-current power supply to latch off if a
sustained fault condition exists can minimize the likelihood of damage to the pc-board
traces and the power devices in the supply. Pulse-width-modulation (PWM]-control
circuits provide no latch-off feature, but the circuit in Figure 1 does.....PFD
contains several circuits, croll to find this one..... [Design Idea by Craig Varga,
Linear Technology Corp, Milpitas, CA] |
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Circuit Drives Latching Relays - 02/01/96 EDN-Design Ideas.....Figure 1
shows a low-parts-count circuit that can drive one- or two-coil latching relays.
Latching relays are useful in sensitive analog designs. The 74ACT174 hex flip-flop has
ample capability to drive the Aromat TQ2E series of latching relays. Both windings for
the TQ2E-L2-5V two-coil relay are on the same magnetic element, so the windings'
fields add. You..... [Design Idea by Roy McCammon, 3M Austin, TX] |
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Circuit Latches Solenoids at a Distance - 10/14/00 EDN-Design Ideas EDN is
migrating links. This link is not verified. Search the "title" + "EDN" for new link.
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Circuit Prevents Processor Latch Up - 03/04/99 EDN-Design Ideas.....The
circuit in Figure 1 uses a Dallas Semiconductor DS1820 one-wire digital thermometer in
a multipoint temperature-measurement system. The DS1820 sensor allows distributed
temperature measurement and uses only one wire for both data communication and the
power supply. You can easily connect the one-wire interface to a µC (in this example,
a PIC16C63]. The application accommodates as many as 16 DS1820 sensors in a 100m-long
network, dubbed MicroLAN by Dallas. Unfortunately, with such long wires near
high-current power cables, inductively coupled high-voltage peaks can cause µC
latch-up, because the transient-voltage suppressor, D1, cannot limit the line voltage
below 9.8V. The interface circuit in Figure 1 prevents such faults..... EDN is
migrating links. This link is not verified. Search the "title" + "EDN" for new link.
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Circuits drive single coil latching relays - 13-Nov-08 Issue of EDN
Five driver circuits operate single-coil latching relays..... [Design Idea by Alfredo
H Saab and Tina Alikahi, Maxim Integrated Products, Sunnyvale, CA] |
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Continuity Tester Latching - Awesome tester!at least in the designers
opinion! [Tony van Roon's circuit] |
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| Latch
Circuits: #-C
D-O P-Z |
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