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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

In stock:

yes (20 available). Estimated dispatch time: 1-3 days

Related to: Project: Power Amp Clipping Indicator (May 2026 [print issue] [online issue])

Other items relevant to this project:

Kit parts list

	6 × 100kΩ mini top-adjust trimpot
	4 × 5kΩ mini top-adjust trimpot
	1 × Power Amplifier Clipping Indicator PCB [01104261]
	2 × 12V SPST DIL reed relay

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 × L7812CV-DG 12 1A linear regulator (TO-220)
	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)
	4 × 1N4148 75V 200mA diode (DO-35)
	1 × 1N4004 400V 1A diode (DO-41)

Through-hole Capacitors

	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 non-polarised electrolytic (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

	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
	4 × 20kΩ ±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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