Shawville, PQ, Canada
Mike Irwin
Mike Irwin
Areas of interest of the author: Oscillators Analogue Design
Publications on RadioLocman by the author Mike Irwin:
- Transconductance Amp Gives Oscillator Reciprocal ResponseThe circuit in Figure 1 is a variation on the familiar integrator/comparator triangle-wave oscillator, which you typically implement with two op amps. An integrator and a comparator connect in a positive-feedback loop; the comparator drives the integrator and vice versa. A...Jun 21, 2022
- Op Amp Linearizes Attenuator Control ResponseProfessional-audio equipment commonly uses Analog Devices‘ high-performance, quad-voltage-controlled SSM2164 attenuator. The control response is –30 dB/V, with 0 V producing unity gain. Attenuation increases as the applied control voltage increases in the...Jun 30, 2020
- Op Amp Linearizes Response of FET VCAFETs find common use in VCAs (voltage-controlled amplifiers) and attenuators, in which the FET serves as a variable resistance. A control voltage applied to the gate sets the channel resistance and overall circuit gain. You frequently need to select individual FETs because of...Dec 25, 2018
