guitarpedalbuilders

The circuit of the E945 is very simple with a single op-amp taking care of the buffing and boosting duties, while the loop is post-buffer/booster. The pedal works really well and the amount of ultra-clean boost is quite staggering with an internal symmetrical supply of +/-12 volts. This E945 is ideal with a twin channel … Read more

ICs, transistors and diodes used in the Boss NF-1 Noise Gate pedal: IC1: uPC741C (operational amplifier IC) D1: RD11EB (11V Zener diode) D3, D3: RD4.7EB (4.7V Zener diode) D4-D8: 1S1588 or 1S2473 (switching diodes) Q1, Q2: 2SC732TM-GR (NPN silicon transistors) Q3: 2SK30A-Y (N-channel JFET transistors) Q4-Q9: 2SC1815-Y (NPN silicon transistors) Adjustment procedure: 1) Set the … Read more