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Power Amplifier Clipping Indicator short-form kit
This kit includes the PCB and pretty much everything else you need to build the Power Amplifier Clipping Indicator.
The only things not included are solder wire, a case (if you're using one), a power supply and some Blu-tack.
See the link immediately below for a complete list of parts in the kit. The photo shows the assembled kit.
| Cat No SC7649. Price: AUD $95.00 1 |
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In stock:  yes (20 available). Estimated dispatch time: 1-3 days | | Related to: Project: Power Amp Clipping Indicator (May 2026 [print issue]) |
Other items relevant to this project: |
Kit parts list
Connectors | 1 × PCB-mount DC barrel socket, 2.1mm ID |
| 4 × 14-pin DIL dual wipe IC socket (DIP-14) |
| 8 × 8-pin DIL dual wipe IC socket (DIP-8) |
| 2 × 3-way mini horizontal terminal block, 5.08mm pitch (green, small, slotted) |
| 2 × 2-way mini horizontal terminal block, 5.08mm pitch (blue, small, Philips) |
| 2 × switched right-angle RCA socket (white) |
| 2 × switched right-angle RCA socket (red) |
Semiconductors | 4 × 5mm high efficiency diffused red LED |
| 2 × LM393 dual low-power comparator IC |
| 3 × NE555P or NE555D timer IC (DIP-8) |
| 3 × TL071CP single JFET-input op amp IC (DIP-8) |
| 4 × TL074CN quad JFET-input op amp IC (DIP-14) |
| 1 × LM336BZ-2.5/NOPB 2.5V adjustable shunt regulator (TO-92) |
| 2 × BC327-40 50V 0.8A PNP transistor (TO-92) |
| 5 × BC337-40 50V 0.8A NPN transistor (TO-92) |
| 1 × Green diffused 5mm high-brightness LED (30mA, 4000mCd) |
| 1 × 1N4004 400V 1A diode (DO-41) |
| 4 × 1N4148 75V 200mA diode (DO-35) |
| 1 × L7812CV-DG 12 1A linear regulator (TO-220) |
Through-hole Capacitors | 2 × 1µF 50V non-polarised electrolytic (pitch?) |
| 1 × 470µF 25V 105°C electrolytic (5mm pitch) |
| 5 × 100µF 16V electrolytic |
| 3 × 47µF 25V (2.5mm pitch) |
| 1 × 22µF 50V 105°C electrolytic |
| 11 × 10µF 50V electrolytic (2.5mm pitch) |
| 2 × 1µF 50V electrolytic |
| 4 × 220nF 100V MKT |
| 13 × 100nF 63/100V MKT |
| 2 × 22pF 50V C0G/NP0 ceramic disc (5mm pitch) |
Through-hole Resistors | 4 × 20kΩ ±1% ¼W |
| 2 × GL5528 20kΩ/1MΩ 5mm LDR |
| 4 × 1MΩ ±1% ¼W |
| 1 × 470kΩ ±1% ¼W |
| 17 × 100kΩ ±1% ¼W |
| 4 × 56kΩ ±1% ¼W |
| 2 × 47kΩ ±1% ¼W |
| 4 × 22kΩ ±1% ¼W |
| 18 × 10kΩ ±1% ¼W |
| 5 × 4.7kΩ ±1% ¼W |
| 2 × 2.2kΩ ±1% ¼W |
| 4 × 1kΩ ±1% ¼W |
| 5 × 820Ω ±1% ¼W |
| 5 × 470Ω ±1% ¼W |
| 4 × 150Ω ±1% ¼W |
| 2 × 100Ω ±1% ¼W |
| 2 × 10Ω ±1% ¼W |
Cable & Hardware | 1 × 50mm length of black, 6mm diameter heatshrink tubing |
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