Date: Wed, 30 May 2007 17:00:46 -0400   – Subject: 555 simulator

Hello, I just found and had a chance to play with the 555 simulator over the internet.

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Howdy! This circuit of yours is EXACTLY what I was looking for. TOTALLY cool! However, I have a few questions about it…mostly because I’m a software guy.

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message: from SJ

for my hobby purpose (pewter small models) i ‘m building a kind off rubber press with two hot plate about max: 200degre C.

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This manual provides maintenance information for the Energv Concepts Digital Multimeter, Model No. 50200. Included are circuit board information, the various adjustments required, parts lists, schematic diagram, and other maintenance and troubleshooting information.

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U1 CD4541 is a Timer with Long Duration Ability. This timer is started by a low pulse from earlier circuit, when the temperature goes above setpoint, a low state is at U2A inputs, this starts the timer.

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This is the best Instrumentation OpAmp, Great CMRR, ensure supply has no ripple and keep analog and digital grounds separate.

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Every electronic gadget primarily needs a D.C, power supply to energize it. It also forms the basic requirement for any constructional project.

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What are LEDs ? How can we use them for Long Battery Life.

Mail from AD

If LED flashes at 5-10 K Hz at even 50{22ca7e5750adbf65450bc4cf6e82790400f3c203d9ecc808a4bc035087435d3d} Duty Cycle.

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message: Hi, i’m looking at building a power supply 0-35v ,0-100A adjustable cv and cc. I stumbled across your circuit  drive-scr-thyristor-with-555 is there a link to describe what phase logic is required to complete the basic design ?

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This is part of a precision High Voltage but Low current Power Supply for Testing leakage currents in passive devices.

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LM399 is a Precision Reference chip. From this a dual polarity mirrored reference is derived using OP07 op-amps. This assembly is mounted in a miniature oven to ensure temperature stability.

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A single Voltmeter or Digital Panel Meter DPM can monitor 8 Analog inputs from sensors or potentiometers using a Mux chip and creating simple digital controls for that.

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This is a continuation of the previous two circuits. This circuit controls the temperature in a miniature oven that holds a stable dual voltage reference.

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This is a simple toy that has many applications. Any object that breaks a light beam will trigger a relay to on condition for a period of time.

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Here is a practical application of the dual differential amp. This circuit is for DC or slow moving DC like Strain Gauge and transducer signals.

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This circuit is built around the chip CD4067, now called 74HC4067, it works like a single pole 16 throw rotary switch that can be controlled digitally.

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