Electronic Circuit Diagrams
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Analog, Digital, Electrical and Power Electronic Designs. Here you will find some of the product and circuit designs of delabs. Some are Educational, Generic and few others are related to Application Notes. Many are Intellectual Property of delabs contributed to EE Education.
- Differential amplifier for HV Power Supply
- High Stability Reference Mirror
- Digital Control for 8 Channel Analog Mux
- Controlled Oven for stable Reference
- Optical obstacle switch with LM567
- Universal Signal Conditioning Circuit
- 16 Channel Analog Multiplexer
- LM331 A to D with Mux Input Switch
This is part of a precision High Voltage but Low current Power Supply for Testing leakage currents in passive devices.
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.
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.
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.
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.
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.
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.
This is the full circuit of a V/F convertor interface for 80C31 SBC. The Mux is configured for selecting between two inputs.