Category Archives: Test and Measurement

Featured Posts

MAX1703 Single-Cell Boost Converter Circuit

When you design a circuit with only a single-cell battery, you will need boost-converter to provide enough voltage for most ...

Read More

55MHz Scope Sensitivity Amplifier

Scope sensitivity amplifier is a vital front-end signal processing for every scope instruments. The function of this circuitry is simple: ...

Read More

Two-Band Bxandall Active Tone Control

Using active circuit for tone control means that we can provide cut and boost, maintaining overall amplifying factor of original ...

Read More

Pulse Width (PWM) Controller Circuit

A LM3900 quad operational amplifier can be used to build a pulse width (PWM) controller. The LM3900 was chosen because ...

Read More

Small TV Modulator Using A Motorola MC1374

How can television modulator be small and simple like this? First, it uses integrated circuit, and the second, any TV ...

Read More

Resistance Thermometer Current Loop Transmitter

Resistance temperature sensor (RTD, resistive temperature device)  comes in NTC (negative temperature coefficient) and PTC (positive temperature coefficient) forms. A schematic diagram below show a signal conditioner circuit for such thermometer. This sensor conditioning circuit works in current mode (current … Continue reading

Posted in Test and Measurement | Tagged , | Comments Off on Resistance Thermometer Current Loop Transmitter

Coincidence Detector for Logic Signals

This is a coincidence detector circuit. This circuit is very useful for monitoring complex logic circuits. This circuit has two inputs, A and B. if A and B are both low, red LED will be on, and green will be … Continue reading

Posted in Test and Measurement | Tagged | Comments Off on Coincidence Detector for Logic Signals

4-20mA Current Loop Bridge Sensor Transmitter

Bridged resistive sensing elements is common in resistive type sensors/transducers. This sensor type need a biasing voltage to operate. LM10 provide low reference voltage, which is suitable for powering usually low resistance bridge type sensors such as strain gauges. The … Continue reading

Posted in Signal Processing, Test and Measurement | Tagged , | Comments Off on 4-20mA Current Loop Bridge Sensor Transmitter

2 Transistors Signal Generator For Signal Tracing

Signal tracing is a method to find failure section of electronic circuit. This method is very common in troubleshooting audio electronics, since the tool for injection and monitoring will be very simple and cheap. The tracing method is done by … Continue reading

Posted in Audio and Music, Test and Measurement | Tagged , | Comments Off on 2 Transistors Signal Generator For Signal Tracing
« 1 2 3 4 5 6 7 8 9 10 11 12 ... 29 »